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ABB CR-M120AC4LG Pack of 10 Pluggable Relays 4C/O 120VAC
£116.74
Why Choose the ABB CR-M120AC4LG Interface Relay?
The ABB 1SVR405618R2100 is a compact and reliable CR-M120AC4LG pluggable miniature interface relay designed for industrial automation, electrical control panels and dependable switching applications. As part of the ABB CR-M relay series, it provides reliable electrical isolation and efficient control of multiple circuits from a single input signal.
This interface relay operates with a 120 V AC control supply and provides four changeover (4 c/o / SPDT) contacts rated at 250 V / 6 A. The gold-plated contacts improve contact reliability when switching sensitive loads and low currents, while the integrated LED provides clear visual indication of relay energisation.
The ABB CR-M120AC4LG features a plug-in construction designed for use with compatible ABB CR-M sockets. The relay and socket combination can be mounted easily onto DIN rails, enabling quick installation, replacement and maintenance in industrial control cabinets.
Key Advantages
- Compact pluggable miniature interface relay for industrial automation systems.
- 120 V AC control voltage suitable for industrial control applications.
- Four changeover contacts (4 c/o / SPDT) for flexible switching configurations.
- Gold-plated contacts improve reliability with sensitive and low-level signals.
- Integrated LED status indication for quick relay monitoring.
- Built-in manual test button simplifies commissioning and maintenance.
Key Features
- ABB CR-M miniature interface relay series.
- Model: CR-M120AC4LG.
- Rated control supply voltage: 120 V AC.
- Output configuration: 4 c/o (SPDT) contacts.
- Contact rating: 250 V / 6 A.
- Contact material: Silver-nickel alloy with gold plating (AgNi/Au).
- Integrated LED relay energisation indicator.
- Integrated orange test button for manual actuation.
- Plug-in design for ABB CR-M relay sockets.
Reliable Switching for Industrial Automation Systems
Interface relays such as the ABB CR-M120AC4LG provide electrical isolation between automation controllers and connected field devices while allowing multiple circuits to be switched from a single control signal. Their compact construction makes them ideal for modern industrial control panels.
The ABB CR-M series combines modular installation, durable relay technology and flexible contact configurations to support machine builders, panel manufacturers and automation engineers. The CR-M120AC4LG delivers dependable performance where accurate switching and long service life are required.
Typical Applications
- PLC interface and signal isolation applications.
- Industrial automation control cabinets.
- Machine control and monitoring systems.
- Motor, actuator and valve switching circuits.
- Building automation equipment.
- Electrical control panels and industrial systems.
Technical Specifications
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| Device Type | Plug-in Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Load Voltage | 250 V AC | |
| Mounting Type | DIN rail, Plug-in socket | |
| Switching Current (A) | 6 A | |
| Current | 6 A | |
| Voltage | 120 V | |
| Coil / Supply Voltage | 120 V AC | |
| Contacts | 1 C/O | |
| IP Rating | IP40 | |
| Manufacturer | ABB | |
| Series | CR-M Interface Relays | |
| Model | CR-M120AC4LG | |
| Product ID | 1SVR405618R2100 | |
| Product type | Pluggable miniature interface relay | |
| Control supply voltage | 120 V AC | |
| Frequency | 50 / 60 Hz | |
| Output contacts | 4 c/o (SPDT) | |
| Rated operational voltage | 250 V AC | |
| Rated current | 6 A | |
| Contact material | Gold-plated silver-nickel alloy | |
| Terminal type | Flat-pin connections | |
| Mounting type | Plug-in socket / DIN rail mounting | |
| Protection rating | IP40 | |
| Dimensions (W × H × D) | approx. 21.2 × 35.6 × 27.5 mm | |
| Weight | approx. 0.033 kg | |
| HS Code | 85364900 | |
| Country of Manufacture | Poland |
Frequently Asked Questions
What is the ABB CR-M120AC4LG used for?
The ABB CR-M120AC4LG is a miniature interface relay used for signal isolation and switching in industrial automation and control systems.
What voltage does this relay require?
The relay operates with a 120 V AC control supply voltage.
How many contacts does the relay provide?
The CR-M120AC4LG provides four changeover (4 c/o / SPDT) contacts.
What is the benefit of gold-plated contacts?
Gold-plated contacts improve reliability when switching small currents and sensitive electronic loads.
Does the relay include indication and testing features?
Yes, the relay includes an integrated LED indicator and manual test button for easier commissioning and maintenance.
Trusted by Automation Engineers Worldwide
ABB CR-M interface relays are widely used in industrial control systems to provide reliable switching, electrical isolation and efficient automation panel integration.
