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1SAH100045R9900 ABB MCRA004ATU Mini Contactor Relay 4NC Control Relay
ABB 1SAH100045R9900 MCRA004ATU mini contactor relay with 4 normally closed auxiliary contacts and a 380–400 V AC control supply for industrial control applications.
£25.63
Why Choose the ABB 1SAH100045R9900 Mini Contactor Relay?
The ABB 1SAH100045R9900 is a compact and reliable mini contactor relay designed for switching control signals and small electrical loads in residential, commercial and industrial automation applications. As part of the ABB MCRA mini contactor relay series, it provides a space-saving solution where dependable auxiliary switching performance is required.
This four-pole auxiliary contactor relay features a dimension-optimised design with screw terminals, making it suitable for electrical control panels and automation systems where installation space is limited. The compact MCRA design provides reliable AC-operated switching performance while supporting wall or rail mounting installation.
With a 380–400 V AC control supply at 50 Hz and a 4 normally closed auxiliary contact configuration, the ABB 1SAH100045R9900 is ideal for switching control circuits, signalling systems and auxiliary loads in industrial automation environments.
Key Advantages
- Compact mini contactor relay designed for control applications.
- 4NC auxiliary contact configuration for flexible control circuit switching.
- 380–400 V AC coil voltage suitable for industrial control systems.
- Space-saving design for electrical panels and automation equipment.
- Reliable ABB switching technology for auxiliary circuits.
- Suitable for DIN rail and wall mounting installations.
Key Features
- ABB MCRA004ATU mini contactor relay.
- 4-pole auxiliary contact configuration.
- 4 normally closed (NC) contacts.
- 380–400 V AC 50 Hz control supply.
- 440 V AC 60 Hz control supply.
- Screw terminal connections.
- Compact 45 mm width design.
- DIN rail and wall mounting capability.
- Suitable for switching control signals up to 6 A at 240 V AC-15.
Reliable Switching for Control Systems
Mini contactor relays such as the ABB 1SAH100045R9900 provide dependable switching of auxiliary circuits, control signals and small electrical loads. Their compact construction makes them suitable for applications where panel space is limited while maintaining reliable industrial performance.
The ABB MCRA series is designed for automation engineers, panel builders and electrical installers requiring compact control solutions. Its screw terminals, flexible mounting options and auxiliary contact arrangement allow straightforward integration into modern industrial systems.
Typical Applications
- Industrial automation control panels.
- Machine control systems.
- Motor control circuits.
- Signal switching applications.
- Building and commercial electrical systems.
- OEM control equipment and switchgear assemblies.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Poles | 4-pole | |
| Device Type | Contactor relay | |
| Auxiliary Contacts | 4NC | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | MCRA Mini Contactor Relays | |
| Model | 1SAH100045R9900 | |
| Product type | Mini contactor relay | |
| Catalog designation | MCRA004ATU | |
| Number of poles | 4 | |
| Auxiliary contacts | 4NC | |
| Rated control voltage | 380–400 V AC at 50 Hz | |
| Rated operational current AC-15 | 6 A at 240 V AC | |
| Rated operational voltage | 690 V AC | |
| Rated insulation voltage | 750 V | |
| Rated impulse withstand voltage | 6 kV | |
| Mounting type | DIN rail / wall mounting | |
| Connection type | Screw terminals | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | 48 × 45 × 56 mm | |
| Weight | approx. 0.17 kg |
Frequently Asked Questions
What is the ABB 1SAH100045R9900 used for?
The ABB 1SAH100045R9900 is a mini contactor relay used for switching control signals and small electrical loads in industrial, commercial and automation applications.
What contact arrangement does this relay have?
The relay has a 4 normally closed auxiliary contact configuration.
What coil voltage does the ABB 1SAH100045R9900 require?
The relay operates with a 380–400 V AC 50 Hz control supply and 440 V AC at 60 Hz.
How is this mini contactor relay mounted?
The ABB 1SAH100045R9900 is suitable for DIN rail or wall mounting installations.
What loads can this ABB relay switch?
The relay is designed for switching control signals and small loads up to 6 A at 240 V AC-15.
Trusted by Automation Professionals Worldwide
ABB MCRA mini contactor relays are widely used by electrical engineers and automation professionals to provide reliable auxiliary switching and efficient control solutions in modern industrial systems.
