USM Relay Sockets for URM Two and Four Changeover Relays

USM Two Changeover Screw Relay Socket
USM Four Changeover Screw Relay Socket
USM Two Changeover Push-In Relay Socket
USM Four Changeover Push-In Relay Socket

Series Part Number

Part Number: USM - 4 P
Explanation:

Series

USM - Relay sockets for URM relays; this breakdown covers USM-2E, USM-4E, USM-2P and USM-4P only.

Relay Configuration

2 - Socket for a two-changeover URM2 relay
4 - Socket for a four-changeover URM4 relay

Connection

E - Protected screw connection socket
P - Push-in connection socket

Description

URM relay socket configurations

USM sockets form the wiring interface for URM plug-in relays. The two-changeover and four-changeover versions provide different terminal layouts. Choose a socket that matches the relay configuration and the required field wiring method.

Socket modelRelay configurationMatching relay familyConnection
USM-2E2 changeover contacts (2CO)URM2Screw, protected socket
USM-4E4 changeover contacts (4CO)URM4Screw, protected socket
USM-2P2 changeover contacts (2CO)URM2Push-in
USM-4P4 changeover contacts (4CO)URM4Push-in

Socket ratings and wiring

ModelSocket current ratingSocket voltage ratingConductor cross-sectionScrew torque
USM-2E10A300VAC0.5-2.5mm²1.0N·m
USM-4E7A250VAC0.5-2.5mm²1.0N·m
USM-2P12A300VAC0.5-2.5mm²Not applicable
USM-4P10A300VAC0.5-2.5mm²Not applicable

The socket and relay are separate components. Check the fitted relay for its coil voltage and load-specific switching capacity; socket current and voltage ratings do not replace the relay ratings.

Insulation and environmental limits

ModelCoil-to-contact withstand voltageBetween-contact withstand voltageAmbient temperatureWeight
USM-2E2000V2000V-40°C to +65°C34g
USM-4E2000V2000V-40°C to +65°C52g
USM-2P4000V2500V-45°C to +85°C46g
USM-4P4000V2500V-40°C to +85°C48g

The duration of the dielectric withstand tests is not specified.