Overview
The ABB CR-M4LS 1SVR405651R3100 is a logical socket designed for the CR-M (miniature) relay range. This socket provides reliable electrical switching for general-purpose and industrial automation applications, featuring robust construction and proven ABB quality. The socket connects seamlessly to CR-M relays with 2 c/o or 4 c/o (SPDT) output contacts, making it a flexible component for control system integration.
Key Features
- Logical Socket Design — Optimized connection logic for 2 c/o or 4 c/o SPDT CR-M relays
- Screw Connection Terminals — Secure, field-proven terminal type for industrial wiring
- DIN Rail Mount — Standard mounting for compact panel integration
- Cadmium-Free Contact Material — Environmentally compliant and long-life construction
- Removable Test Button — Integrated manual actuation feature for commissioning and diagnostics
- Safety Features — Overvoltage protection and reversible polarity protection built in
Technical Specifications
- Voltage Rating: 250 VAC/VDC
- Current Rating: 7 A
- Contact Configuration: 2 c/o or 4 c/o (SPDT) contacts
- Terminal Type: Screw connection
- Conductor Size: 20–14 AWG
- Mounting: DIN Rail
- Operating Temperature Range: −40 to +70 °C
- Dimensions: 82 mm (L) × 27 mm (W) × 61 mm (H)
- Series: CR-M (miniature)
- Certifications: RoHS Compliant
Typical Applications
The CR-M4LS socket is widely used in industrial automation, process control, machine safety circuits, and HVAC systems. Common installations include PLC-driven control panels, distributed I/O systems, and legacy relay logic modernization projects. The modular CR-M system allows engineers to customize relay function (coil voltage: 12 V DC, 24 V DC, 24 V AC, 230 V AC) without changing the socket or panel hardware.
Compatibility & Replacements
The 1SVR405651R3100 socket is part of ABB’s CR-M pluggable relay ecosystem and is compatible with CR-M Series 2 c/o or 4 c/o SPDT relays. Functional modules, holders, and marker accessories are available to expand functionality. This socket does not have a direct cross-brand equivalent; for alternative miniature relay sockets, consult ABB or your distributor for CR-M series options. The logical socket variant differs from the standard socket in terminal routing—verify your wiring diagram before substitution.
