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1SAH220397R9900 ABB MCRC004ATWD Mini Contactor Relay 4NC Control Relay
ABB 1SAH220397R9900 MCRC004ATWD auxiliary contactor relay with 24 V DC coil, four normally closed contacts and 6 A switching capability for industrial control applications.
£34.47
Why Choose the ABB 1SAH220397R9900 MCRC004ATWD Auxiliary Contactor Relay?
The ABB 1SAH220397R9900 is a compact and reliable MCRC004ATWD mini auxiliary contactor relay designed for switching control signals and small electrical loads in industrial automation, building systems and electrical control applications. As part of the ABB MCRC mini auxiliary contactor range, it provides space-saving installation, dependable DC coil operation and flexible integration into modern control panels.
This auxiliary contactor features a four-pole configuration with four normally closed contacts, screw terminal connections and a compact design optimised for applications where control performance is required but installation space is limited. It is suitable for wall or DIN rail mounting and can be expanded with additional auxiliary contacts.
With a 24 V DC control supply, a 6 A rated operational current and four normally closed auxiliary contacts, the ABB MCRC004ATWD is ideal for control signal switching, interface applications and industrial automation systems.
Key Advantages
- Compact auxiliary contactor relay designed for space-saving installations.
- 24 V DC coil operation suitable for industrial control systems.
- Four normally closed auxiliary contacts for flexible control signalling.
- 6 A rated operational current for control circuit switching.
- Suitable for DIN rail or wall mounting.
- Expandable with additional auxiliary contact blocks for increased functionality.
Key Features
- ABB MCRC mini auxiliary contactor series.
- MCRC004ATWD contactor relay type.
- 24 V DC control voltage.
- 4-pole auxiliary contact configuration.
- 4 NC auxiliary contacts.
- 6 A rated operational current.
- 4 A rated operational current at 400 V.
- Screw terminal connections.
- Compact enclosure for industrial control panels.
Reliable Control Switching for Industrial Automation
Auxiliary contactor relays such as the ABB MCRC004ATWD provide reliable switching of control signals and small electrical loads while maintaining a compact installation footprint. They are commonly used alongside contactors, relays and automation equipment to provide additional signalling and interlocking functions.
The ABB MCRC series is designed for industrial, commercial and building automation applications where dependable control switching, flexible mounting and efficient panel integration are required.
Typical Applications
- Industrial automation control systems.
- Electrical control panels and cabinets.
- PLC interface and signalling circuits.
- Motor control auxiliary circuits.
- Building automation systems.
- Industrial relay and contactor control applications.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Voltage Range | 24 V | |
| Coil / Supply Voltage | 24 V DC | |
| Device Type | Auxiliary contact block | |
| Auxiliary Contacts | 4NC | |
| Coil Type | DC | |
| Manufacturer | ABB | |
| Series | MCRC Mini Auxiliary Contactors | |
| Model | MCRC004ATWD | |
| Part number | 1SAH220397R9900 | |
| Product type | Auxiliary contactor relay | |
| Control voltage | 24 V DC | |
| Coil type | DC wide voltage coil | |
| Auxiliary contacts | 4 NC | |
| Rated operational current | 6 A | |
| Rated operational current Ie at 400 V | 4 A | |
| Rated insulation voltage | 690 V AC / 440 V DC | |
| Connection type | Screw terminals | |
| Mounting type | DIN rail / wall mounting | |
| LED indication | No | |
| Dimensions (H × W × D) | 48 × 45 × 68 mm | |
| Weight | approx. 0.235 kg |
Frequently Asked Questions
What is the ABB 1SAH220397R9900 used for?
The ABB 1SAH220397R9900 MCRC004ATWD is an auxiliary contactor relay used for switching control signals and small electrical loads in automation and industrial control systems.
What coil voltage does this auxiliary contactor require?
The contactor relay operates with a 24 V DC control supply.
How many auxiliary contacts are included?
The ABB MCRC004ATWD includes four normally closed auxiliary contacts for control and signalling applications.
What current rating does this auxiliary contactor have?
The device has a rated operational current of 6 A for auxiliary switching applications.
How is this auxiliary contactor installed?
The contactor relay can be installed using DIN rail or wall mounting methods inside electrical control systems.
Trusted by Automation Engineers Worldwide
ABB MCRC auxiliary contactor relays are widely used in industrial automation and control systems to provide reliable signalling, interlocking and switching functions in compact electrical installations.
