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Circuit breakers offer circuit protection, which is far superior to fuses in applications containing relay circuits, motors, heaters, transformers, solenoids and semiconductors.
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Switching, Protection, Communication – Circuit-Breakers and Switch-Disconnectors up to 1600 A
It has arrived, our new homogenous circuit-breaker series
The Moeller principle of innovation and future security of investment has been implemented by the new circuit-breaker series up to 1600 A.
Four switches with four levels of switching capacity
Four switches with four universal levels of switching capacity form a comprehensive range, from the competitively priced 25 kA for small sub-distribution boards, up to 150 kA switching capacity for complex high-power systems. The compact construction of the new small 160 A switch saves space as a main switch in machine control schemes, as an incomer in service distribution boards or as an outgoer in power distribution boards. Additional device levels are 300 A, the particularly compact 630 A, and the large 1600 A circuit-breaker.
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Bulletin 1492-MC Circuit Breakers
Industrial Circuit Breakers for North American Applications
The Bulletin 1492-MC line includes:
1/2 in. wide circuit breakers
1 in. wide circuit breakers
Ground Fault Circuit Interrupters (GFCIs)
Ground Fault Equipment Protector (GFEPs)
Bulletin 1489 Circuit Breakers
Industrial Circuit Breakers for North American Applications
The Bulletin 1489 line includes:
UL 489, CSA 22.2 No. 5.1
240V AC 0.5...40 A
1-pole 48V DC 0.5%u202640A
480V/277V AC 0.5...25 A
2-pole (series) 96V DC 0.5%u202640A
Miniature Circuit Breaker for IEC Applications EN 60 947-2
415V AC 0.5...40 A
48V DC 0.5%u202640 A
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Mitsubishi Electric offers a complete range of switchgear products, including everything from air circuit breakers and compact moulded case circuit breakers to magnetic contactors and thermal overload relays. Standardised chasses, high reliability, simple installation, easy operation and trouble-free upgrading are just some of the outstanding features.
Mitsubishi circuit breakers and contactors conform to all major international industrial standards and shipping classifications. And they also are particularly attractive. For example, our Super AE series of air circuit breakers won the prestigious Industrieforum Design award for product design.
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If a magnetic relay coil is opened and closed near an electronic circuit, malfunctioning of the electronic circuit could be induced by a surge voltage. The UN-SA type surge absorber suppresses the surge voltage when the coil is opened and closed. In addition to the general varistor type and the CR type that lays importance on suppressing the induction voltage when starting, the type with operating indicator (varistor type), and the varistor type with CR are available.
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No electrical system can do without circuit breakers, as they are the 'stop' signs acting when too much current is flowing through electrical wiring.
In fact, they are essential devices and one of the most important safety mechanisms for the prevention of dangerous situations. The value of circuit breakers depends on which appliances are connected. You can either order a ready-made switchboard with the most common circuit breaker values, or give the installer or distributor a list of your specific values for a tailor-made solution.
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Circuit breakers offer circuit protection, which is far superior to fuses in applications containing relay circuits, motors, heaters, transformers, solenoids and semiconductors.
NRA Series
Dual mounting (panel mount or socket mount) circuit breakers with a variety of actuator styles and current rantings up to 30A. Available in 1, 2 or 3 poles; standard and motor time delay curves.
NRB Series
Panel mounting circuit breakers with stud terminals and current ratings up to 50A. Available in 1, 2 or 3 poles; standard and motor time delay curves.
NRC Series
DIN rail mountable circuit breakers with screw terminals and ratings up to 30A. Available in 1 or 2 poles; standard and electronic time delay curves.
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DataLinx - Category 5e / T1 Protected Patch Panels
12 Port Protected Patch Panel, CAT5/5E and T-1 rated, 110 and RJ45 I/O, UL Listed for Primary, Secondary and Isolated Loop, fits 19
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Description
Special technical features of dead-tank design. The distinguishing feature of dead-tank technology is that the interrupter chamber is accommodated in an earthed metal housing. With this arrangement the SF6 gas filling insulates the high voltage live parts of the contact assembly from the housing. Outdoor bushings connect the interrupter chamber with the high-voltage terminals.
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Electronic Overcurrent Protection
ESS1
Electronic circuit breaker (DC 24 V, max. 6 A), with physical isolation, LED status indication
SVS1
Modular power distribution system for ESS1; 4, 8, 12, 16 positions
ESS20-0..
Electronic circuit breaker (DC 24 V, max. 10 A), with physical isolation, 1 LED
Module 17plus-ESS20-0
Modular power distribution system for ESS20-0, two-way, track-mountable
ESS20-1
Electronic circuit breaker (DC 24 V, max. 10 A), with reset input, 1 LED
Module 17plus-ESS20-1
Modular power distribution system for ESS20-1, two-way, track-mountable
ESX10
Electronic circuit protector DC 24 V, max. 12 A, electr. disconnection 1 LED, reset input, status output
Module 17plus-ESX10
Modular power distribution system for electronic circuit protector ESX10
ESS60T
Electronic circuit breaker (DC -48 V, max. 60 A) with serial interface, 1 LED
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The National Electrical Code requires GFCI protection of receptacles located outdoors and in bathrooms, garages and spa areas. This GFCI circuit breaker provides protection against overloads, short circuits and ground faults. It detects very low levels of electrical current leaks (ground faults), and acts quickly to shut off power, preventing serious shock.
Features and Benefits
* UL Listed (Molded Case Circuit Breakers No. 489 and Ground Fault Circuit Interrupters No. 943).
* Class A (.005 ampere ground fault trip level).
* Available from 15-30 Amps 1 Pole, 15-50A 2 Pole.
* Voltage is 120 and 240 volt ratings
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Hitachi Mould Case Circuit Breaker ( Fuse-Free Breakers ) & Earth Leakage Breakers are designed for circuit protection of low-voltage distribution systems. They are suitable for applications as main breakers, protection of branch, feeder circuits and connected apapratus.
Quick contact inspection/ Easy contact replacement.
Easy wiring/ High safety/ High Reliability.
DIN rail mounting mechanism.
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- Protection against overload, short-circuit and ground fault.
- Offering economical solution with compact and increased interrupting
capacities.
- Employing a fixed thermal and fixed magnetic trip.
- Frames made of rigid materials of engineering plastics
- Offering the physically same size with MCCBs.
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Over the past century, GE has designed and manufactured literally tens of thousands of medium and high voltage circuit breakers. Although many of the older designs are no longer manufactured, many units remain in service. GE can deliver solutions for these breakers without the cost and downtime associated with complete equipment replacement. If you have any of the following breakers in service, we can provide parts or engineered solutions to support your maintenance needs:
Features and Benefits
* Parts designed and manufactured to the original or improved specifications.
* Parts in stock for fast delivery when you need them.
* Engineering support to provide support for your specific requirements.
* Extend the service life of your equipment with Genuine GE Parts, designed by the original manufacturer assuring reliable fit and performance.
* Increase rating capacity with packaged engineered solutions.
* Save time with easy to install original parts
* On-site service installation or supervision optionally available.
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Features and Benefits :
- Parts designed and manufactured to the original or improved specifications.
- Parts in stock for fast delivery when you need them.
- Engineering support to provide support for your specific requirements.
- Extend the service life of your equipment with Genuine GE Parts, designed by the original manufacturer assuring reliable fit and performance.
- Increase rating capacity with packaged engineered solutions.
- Save time with easy to install original parts
- On-site service installation or supervision optionally available.
Product Scope:
- MagneBlast Medium Voltage vertical lift circuit breakers.
- FK, FKD, FKA and VIB medium and high voltage outdoor distribution breakers.
- ARA generator breakers.
- ATB high Voltage transmission breakers.
- Type MC and AG dc breakers.
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Siemens high-voltage circuit-breakers offer the optimum technical and economical solution for every requirement. Depending on the application and the voltage level, they are equipped with the following combinations of arc quenching principle and operating mechanism:
* Self-compression principle with stored energy spring mechanism
* Puffertype with hydraulic mechanism
All the live- and dead-tank circuit-breakers, as well as the gas-insulated switchgear (GIS), are equipped with the same components. Longevity, reliability and highest availability in all climate zones in the world distinguish Siemens high-voltage circuit-breakers from all others.
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808
Single pole purely magnetic circuit breaker,
fast acting, for pcb mouting
8340-G2
Hydraulic-magnnetic circuit breaker, push-pull actuation, threadneck panel mounting
8340-G2-DC110V
Hydraulic magnetic circuit breaker with push-pull actuation for DC110V applications
8340-F
Toggle-operated hydraulic-magnetic
circuit breaker, flange mounting
8340-T
Toggle-operated hydraulic-magnetic
circuit breaker for rail mounting
8345
Toggle-operated hydraulic-magnetic circuit breaker, flange mounting, ratings up to 125 A
8345-DC110V
Toggle-operated hydraulic-magnetic circuit breaker, flange mounting, ratings up to 125 A
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Typical Applications
Warn of trouble by providing an alarm output if a process signal exceeds a high or low limit.
Create an independent emergency shut-down system to avert undesirable situations in the event of central power failure or DCS shutdown.
Combination alarm trip and transmitter modules reduce costs when both alarming and monitoring functions are needed at the same location.
Sense dangerous conditions, and shut down equipment, before it is damaged.
Compare two variables and trip an alarm when the difference between the two exceeds a preset value.
Install multi-trip alarms to provide several levels of warning and shutdown actions.
Use for reliable, and cost-effective, on/off control of pumps and motors.
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Description
Special technical features of live-tank design: On live-tank circuit-breakers, the interrupter chamber is arranged in the insulator which can be either porcelain or of a composite material, and is at high potential; with the voltage level determining the length of the insulators for the interrupter chamber and the insulator column.
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General description:
EntelliGuard® G circuit breakers are the newest line of GE low-voltage circuit breakers, the next step in the evolution of a line known for its exceptional reliability and performance. They are available in 3- and 4-pole designs rated from 400A to 6000A, with fault interruption ratings up to 150kAIC
Integral to the EntelliGuard G breakers are the new, state-of-the-art EntelliGuard TU Trip Units, which provide superior system protection, system reliability, monitoring and communications.The breaker-trip unit system delivers superior circuit protection without compromising either selectivity or arc flash protection.
The EntelliGuard breaker-trip unit system demonstrates yet again GE's core competencies in reliable electric power distribution, circuit protection and personnel protection.
Modern economic reality and the regulatory environment demand system performance while recognizing the need to protect against the arc flash hazards that expose maintenance personnel to dangerous levels of heat, electrical energy, debris from damaged equipment and concussive forces. The challenge is to provide both better personnel protection by minimizing arc flash hazards and maintain electrical power to mission-critical loads. But these objectives often seem to conflict, pitting the speed and sensitivity required to optimize safety against the sequence of operations and interlocking required to maximize power system availability.
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Main Circuit Breakers
100 to 225A. THQM main breakers are configured to allow top or bottom feed without modification.
Feeder Plug-in Circuit Breakers
15 to 200A. Choose from 1/2" THQP or 1" THQL & TQDL breakers with options for 1 to 3 poles. THQP breakers allow the use of smaller load centers that save money and space in both new installations and service upgrades.
Ground Fault Circuit Interrupter (GFCI)
15 to 50A. 1" THQL breakers with options for 1 or 2 poles. This GFCI circuit breaker provides protection against overloads, short circuits and ground faults.
Arc Fault Circuit Interrupter (AFCI)
Branch/Feeder AFCI - 15 to 20 amp, ½" or 1", 1 or 2 pole
Combination AFCI - 15 to 20 amp, 1", single pole
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Features and Benefits:
- True closed-door drawout design
- Field-installable accessories
- One standardized wiring diagram for all breakers with dedicated secondary disconnect and breaker accessory points
- Trip unit display through the breaker escutcheon with metering and trip information
- Three choices of solid-state trips with function and cost variability:
Power+ with basic overload and short circuit protection, and optional ground fault trip target
MicroVersaTrip Plus with full range of overcurrent and ground-fault protective functions
MicroVersaTrip PM with advanced metering, communications and protective relaying options.
- Maintenance convenience and safety
- Maximum selectivity with downstream devices
- Minimum downtime
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Terasaki has a full range of Moulded Case Circuit Breakers from 30A to 4000A, and Air Circuit Breakers from 800A to 6300 A.
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Raychem PESD electrostatic discharge protection devices are designed for I/O port protection in high-speed data transmission applications, PESD devices shunt ESD away from sensitive circuitry in electronic devices. The PESD devices provide exceptionally low capacitance, they perform better than other comparable components in TLP (transmission line pulse) testing, as well as IEC61000-4-2 testing, especially after multiple hits (up to 1000). The devices offer a lower trigger voltage and a lower clamping voltage than typical polymer ESD (electrostatic discharge) devices, resulting in improved protection of sensitive electronic components.
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Features and Benefits :
- Modular design with interchangeable footprint and parts for all breaker sizes
- Comprehensive mechanical and electrical interlocks for operating safety
- Virtually maintenance-free vacuum interrupter contacts
- Direct reading erosion indicator for vacuum interrupter contacts
- Superior vacuum interrupter technology
- Reliable, quite arc interruption
- Extensive factory testing
- Operator convenience
- Reduced maintenance required over product life
- High degree of reliability and product integrity
Product Scope:
- Modular, standardized frame size, regardless of voltage or interrupting capacity.
- Most of the frame parts, primary conductors, disconnects, and mechanisms are interchangeable throughout the breaker product line
- Can be used in systems rated 4.16kV - 250 MVA through 13.8kV - 1500 MVA at 1200, 2000, 3000, 3500, and 4000 A (in fan-cooled equipment)
- Ratings 27kV 16kA & 25kA, 1200 & 2000A are available.
- Designed and tested to all applicable ANSI, IEEE , and NEMA standards, and carry a UL and CSA label.
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The heart of the GE PowerVac® circuit breaker is the vacuum interrupter. GE pioneered this interrupter technology beginning with experimental work in the 1920's. Today, the vacuum design remains superior to other arc interruption technologies by providing a smaller footprint and simpler design.
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Application - Miniature circuit breakers ETIMAT DC are
used for protection of conductors in direct current
electric circuits. 1-pole circuit breakers are used for
voltages up to 220 V d.c.
and for higher voltages (up to 440 V d.c.) 2-pole circuit
breakers with poles connected in a series.
When connecting the MCB ETIMAT DC man must pay
attention to polarity.
If connected in a wrong way, the MCB can be destroyed.
You cannot use two 1-pole MCBs instead of one 2-pole MCB.
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Q-Line Miniature Circuit Breakers
15 to 100A. THQB and THQC types. Available in bolt-on and Cable-in Cable-out (lug-lug) versions.
E2000 Miniature Circuit Breakers
0.5 to 63A. These miniature circuit breakers offer superior supplemental overload and short circuit protection. The E2000 line has two levels of interruption capacity, 6 kAIC and 10 kAIC.
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Field finable
accessories
J Short-circuit capacity 6kA (EN 60898)
1 Tripping characteristic
B,C,D
Application
Domestic and commercial distribution
Rated voltage: 230V / 400V-
Frequency: 50 / 60 Hz
Calibration temperature: 30°C
Terminal capacity: 35 mm2
Electrical endurance: 30,000
Mechanical endurance: 40,000
Poles: 1p 1p+N 2p 3p 3p+N 4p
Mounting: 35mm symmetrical DIN rail (EN 50022-DIN 46277)
Standards: EN 60898, EN 60947-2, EN 20317
Nominal current ratings from 0.3 to 63A
The TemDin2 range of Miniature Circuit Breakers have been designed for protection of electrical installations against overload and short circuits.
Tripping curves
The TemDin 2 series of Miniature Circuit Breakers are manufactured in accordance with EN 60898 (tripping characteristics B, C and D)
- Curve B: magnetic trip threshold = 3 - 5 In
- Curve C: magnetic trip threshold = 5 - 10 In
- Curve D: magnetic trip threshold = 10 - 20ln
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Nominal current ratings from 10 to 40A
Miniature circuit breakers designed for protection of
electrical installations against overloads and short circuits
Features
- Short-circuit capacity : 6kA ( EN 60898 )
- Tripping characteristic : C
- Application : Dommestic distribution
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