Protection relays

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Protection relays | Choosing the Right Protection Relay
Protection relays enable the safe distribution of electricity from the grid. Their function is to detect anomalies in the grid that could lead to dangerous situations and, if necessary, interrupt the electrical circuit for as long as necessary. They provide differential, overcurrent, and arc flash protection. This protection is ensured by the relay’s ability to respond rapidly. A relay can consist of several modules, each with its own function.
voltage protection relay
voltage protection relay
S91

Tripping current: 0 A - 16 A
Trigger voltage: 220 V - 415 V

S91 is a protection device for electric motors. It allows the detection of incorrect phase sequence or phase failure, excess current consumption, no-load operation with power factor measurement. The device has an input ...

over-current protection relay
over-current protection relay
VACON® NXP DCGuard

Tripping current: 3 A - 4,140 A
Trigger voltage: 465 V - 1,100 V

... However, ensuring selectivity and limited short circuit energy requires more sophisticated protection devices. VACON® NXP DCGuard™ is a semiconduc­tor protection device that maintains the stability ...

earth-leakage protection relay
earth-leakage protection relay
X35DB34DCR102

Tripping current: 30 mA - 5,000 mA
Trigger voltage: 230 V

... earth leakage relays, type B earth leakage relays are able to detect residual currents with both DC and AC components. This relay is used in conjunction with a trip protection ...

earth-leakage protection relay
earth-leakage protection relay
X35DB34DCX112

Tripping current: 30 mA - 5,000 mA
Trigger voltage: 230 V

... earth leakage relays, type B earth leakage relays are able to detect residual currents with both DC and AC components. This relay is used in conjunction with a trip protection ...

earth-leakage protection relay
earth-leakage protection relay
X35DL3030R102

Tripping current: 30 mA - 30,000 mA
Trigger voltage: 230 V

... use of a type B earth leakage relay. Type A earth leakage relay are mandatory for TT neutral systems. This relay is used in conjunction with a trip protection device ...

over-current protection relay
over-current protection relay
MRI4

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AWF
earth-leakage protection relay
earth-leakage protection relay
MRM4

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AWF
voltage protection relay
voltage protection relay
MRMV4

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AWF
temperature protection relay
temperature protection relay
Motogard series

Trigger voltage: 230, 120 V

... sensor lead breakage or loss of power • Protection against sensor lead short circuit (series 135 and 150 only) • Solid state or electro-mechanical outputs (Triac in series 115 and 120, Form C electromechanical relay ...

safety protection relay
safety protection relay

Tripping current: 4, 6 A
Trigger voltage: 24 V

... 13/14,23/24:The terminal of dual safety output (NO) 31/32: The terminal of signal output (NC) Power:Red LED, power (V+/V-)on CH1:Green LED,light on when safety relay K1 closed CH2:Green ...

three-phase motor pump protection relay
three-phase motor pump protection relay
SubMonitor

... and easily. The SubMonitor is the latest innovation in 3-phase pump protection from Franklin Electric. Using state-of-the-art technology, the SubMonitor provides the ultimate protection for a pump and ...

over-excitation protection relay
over-excitation protection relay
KUS 0602

Tripping current: 8 A

Overexcitation controls from KUHSE are used to increase the starting force of actuating solenoids. Consequently the attraction time is minimized automatically. Individual solutions can be supplied according to the customers´ request. ...

voltage protection relay
voltage protection relay
ARKENS PR

Multipurpose digital protection relay - IEC 61850 - Station Bus This cost-effective protective device is used to perform advanced protection, control and monitoring ...

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