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The Type NAA relay is the general designation of a large family of special purpose auxiliary relays. Most NAA relays have two or more telephone type auxiliaries mounted in the regular draw out case. In some specific types an overcurrent function may also be included.
Applications
Ground distance auxiliary (NAA15)
Out-of-step auxiliary (NAA19)
Transferred tripping auxiliary (NAA27)
Relay Supervision (NAA30)
Protection and Control
Application specific configurations
Adjustable pickup/dropout times
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* HEA Multicontact Auxiliary Relay
The Type HEA high-speed multicontact, auxiliary relays are applicable where it is desired that a number of operations be performed simultaneously from the operation of a single relay.
* HAA Auxiliary or Annunciator Relay
Generally two specific forms of the HAA are available, a current operated unit and a voltage operated unit. Example: HAA15A4 is 0.2/2 A DC and the HAA15B5 is a 125 VDC unit. Also, two general case designs are available. The single units such as HAA 15 use a molded plastic case with glass window and all others the standard drawout case.
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The relays are designed to still guarantee optimal benefits and absolute security in the more adverse surroundings of operation. An ample range of auxiliary relays is offered: monostable, bistable, time-lag and of function and measurement.
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Application
Whenever levels and power have to be matched, as is the case for low switching frequencies, electromechanical relays are the preferred choice as interface components between periphera process devices and the control logic. In principle, electromechanical relays are divided into two main categories, monostable and bistable.
Monostable AC or DC - relays return their swich contacts to a non-operative state independently after coil current has been switched off. Bistable relays, on the other hand, leave their switch contacts in the last switched position after the energising current has been interrupted. Relays convince with their robust construction and their inexpensive and universal practical suitability. However, their possible application is limited because of relatively low switching frequencies.
Product information
Output separated
Input suitable for AC and DC voltage
Operating status shown by LED
Precious metal contacts for greater switching performance
Simple mounting on rail acc. to DIN 46277
Conforms to EMC and low voltage directive
Safety acc. to VDE, EN, UL, CSA
Technical data
Nominal input voltage: 24 VAC / 24 VDC
Switching voltage (Output): 250 VAC / 48 VDC
Switching current (Output): max. 12 A / max. 2.4 A
Switching barrier: ≥ 18 V
Number of channels: up to 5
Operating temperature range: -30°C / +70°C
Mounting: on rails acc. to DIN 46277
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Coupling units for building and plant equipment
With universal supply, emergency light controls and analog data encoders facilitate and expedite maintenance in building service systems. Plant construction can also benefit from the convenience of being able to switch sections of plant over to manual operation locally on an individual basis.
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Demonstrated quality and knowledge base on many applications. A wide range to answer all your requirements.
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1 pole 12 / 16 A, 2 pole 8 A, 1 CO contact or 2 CO contacts
DC- or AC coil
Sensitive coil 400 mW
Reinforced insulation, protection class II (VDE 0700)
5 kV / 10 mm coil-contact
1pole 12 A with 3.5 or 5 mm pinning
Recycleable packaging
RoHS compliant (Directive 2002/95/EC)
Applications
Panel boards, mechanical engineering
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Interface relays, Auxiliary relays
