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ABB INTERFACE RELAY RA4

Product Code: RA4

RA4 is an interface relay designed to receive 24 V DC signals delivered by PLCs or other sources with a low output power and to restore them with sufficient power to operate the coils of the relevant AF09 ... AF96 contactors or the NF contactor relays. RA4 interface relay is made up of a miniature electromechanical relay equipped with a N.O. contact and with a low consumption 24 V DC coil. The interface relay coil is controlled by the PLC while the N.O. contact ensures switching of the power contactor. Easy to install: less compact than other market solutions, RA4 is simply clipped on the top of the contactor. Optimum interface: it accept all 24 VDC low output power signals down to 20 mA 24 V DC. Optimize your logistics and cost, thanks to 1 single RA4 interface relay for AF09...AF96 / NF monitoring control voltages up to 250V AC, without any additional accessory or wiring for assembling.

Technical Specifications

Control Circuit Connecting Capacity Flexible with Ferrule 1/2 x 0.75 - 2.5mm² Flexible with Insulated Ferrule 1 x 0.75 - 2.5mm² Flexible with Insulated Ferrule 2 x 0.75 - 1.5mm² Rigid Solid 1/2 x 1 - 2.5mm² Rigid Stranded 1/2 x 1 - 2.5mm²
Brand ABB
Ambient Temperature Range (°C) -25 to 60
Coil Voltage AC (V) 24 - 250
Dimensions (mm) 44.8W x 40.5H x 31.16
Rated Control Circuit Voltage DC (V) 24
Rated Insulation Voltage (V) 250
Standards and Approvals IEC/EN 60947-5-1, UL 60947-1, UL 60947-4-1
Terminal Type Screw
Weight (kg) 0.04
Wire Stripping Length (mm) Control Circuit: 10mm

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