1. Product Overview

The ABB CR-M4SS (1SVR405651R3000) is a standard socket designed for the CR-M miniature relay series, supporting both 2 and 4 c/o (SPDT) output contacts. Its robust screw connection terminals ensure reliable electrical contact under industrial operating conditions. Moreover, the modular design allows easy integration with pluggable function modules, holders, and markers, providing flexibility for control panel configurations.

2. Functional Highlights & Key Benefits

This relay socket enables quick and secure installation of CR-M relays while maintaining safe and durable connections. In addition, the pluggable design allows rapid replacement of relays without disturbing wiring, reducing maintenance downtime. Therefore, engineers benefit from improved system reliability and easier field servicing. Furthermore, the socket is designed to withstand harsh environmental conditions, including wide temperature ranges and elevated altitudes, making it suitable for diverse industrial applications.

3. Technical Data / Specifications

General Information

• Manufacturer: ABB

• Product Type: Standard Relay Socket

• Model: CR-M4SS

• Part Number: 1SVR405651R3000

• EAN: 4013614528675

• Weight: 0.07 kg

• Dimensions: 27 mm (W) × 42.5 mm (H) × 82 mm (D)

Electrical Characteristics

• Connection Terminals: Screw

• Connecting Capacity (UL/CSA):

• Flexible with ferrule: 2 × 20–16 AWG

• Rigid: 2 × 20–14 AWG

• Stranded: 2 × 20–14 AWG

• Compatible Relays: CR-M with 2 or 4 c/o contacts

Mechanical & Environmental Data

• Flammability Rating: UL94 V-0

• Ambient Air Temperature: -40 ... +70 °C (Operation & Storage)

• Maximum Operating Altitude: 2000 m

Accessories (Optional)

• Pluggable function modules

• Holders

• Markers

4. Typical Applications & System Integration

The CR-M4SS is widely used in control cabinets for industrial machinery, automation systems, and process control panels. For instance, it allows easy relay replacement in production lines while maintaining consistent system operation. Moreover, its compact design ensures efficient use of panel space and supports modular control schemes in complex automation setups.

5. Support & Maintenance

Routine inspection and relay replacement are straightforward due to the pluggable design. In addition, ABB provides comprehensive documentation and global support, ensuring long-term reliability and serviceability for industrial applications.

FAQ

Q1: Which relays are compatible with the CR-M4SS socket?
It is suitable for ABB CR-M miniature relays with 2 or 4 c/o (SPDT) output contacts.

Q2: What types of conductors can be used with this socket?
Flexible, rigid, and stranded copper conductors from 20–16 AWG or 20–14 AWG depending on type.

Q3: Is the socket suitable for harsh environmental conditions?
Yes, it operates reliably from -40 °C to +70 °C and up to 2000 m altitude.

Q4: Can pluggable accessories be added to this socket?
Yes, function modules, holders, and markers can be easily integrated for modular configurations.