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1SAH102179R9900 ABB MCRA040ARJ Mini Contactor Relay 4NO Control Relay
ABB 1SAH102179R9900 MCRA040ARJ mini contactor relay with 110–115 V AC coil and four normally open contacts designed for industrial control applications.
£25.63
Why Choose the ABB 1SAH102179R9900 Mini Contactor Relay?
The ABB 1SAH102179R9900 is a compact and reliable mini contactor relay (auxiliary contactor) designed for switching control signals and small electrical loads in industrial automation, commercial installations and electrical control systems. As part of the advanced ABB MCRA mini contactor relay series, it provides dependable auxiliary switching performance in a space-saving four-pole design with ring tongue ferrule screw terminals.
This mini contactor relay is engineered for applications where high performance is required but installation space is limited. The MCRA series features dimension-optimised four-pole construction, screw terminals designed for ring cable lug connections and flexible mounting options, making it suitable for residential, commercial and industrial control applications.
With a 110–115 V AC coil supply at 50 Hz, 110–120 V AC coil supply at 60 Hz and 4 normally open auxiliary contacts, the ABB 1SAH102179R9900 is ideal for automation panels, electrical control systems and applications requiring reliable auxiliary switching.
Key Advantages
- Compact mini contactor relay designed for control applications.
- 4NO auxiliary contact configuration for flexible circuit control.
- 110–115 V AC coil voltage at 50 Hz suitable for industrial control systems.
- Special screw terminals for ring tongue ferrule connections.
- Space-saving four-pole design for compact electrical installations.
- Suitable for switching control signals up to 6 A / 240 V AC-15.
Key Features
- ABB MCRA mini contactor relay series.
- Four-pole auxiliary contactor relay design.
- 4 normally open (NO) auxiliary contacts.
- 110–115 V AC 50 Hz coil supply.
- 110–120 V AC 60 Hz coil supply.
- 6 A AC-15 control switching capability.
- Ring tongue ferrule compatible screw terminals.
- Suitable for DIN rail or wall mounting.
Reliable Switching for Industrial Control Systems
Mini contactor relays such as the ABB 1SAH102179R9900 provide dependable switching of auxiliary circuits, control signals and smaller electrical loads. Their compact construction allows machine builders and panel manufacturers to achieve reliable control functionality while reducing cabinet space requirements.
The ABB MCRA series is designed for automation engineers and electrical installers requiring robust switching components with flexible mounting options and straightforward wiring. The auxiliary contacts support integration into modern industrial control circuits, automation systems and electrical panels.
Typical Applications
- Industrial control panels and electrical cabinets.
- Machine automation and OEM equipment.
- Motor control auxiliary circuits.
- Industrial relay and switching applications.
- Building automation systems.
- Commercial and electrical distribution installations.
Technical Specifications
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| Terminal Type | Ring tongue | |
|---|---|---|
| Coil Voltage Range | 100–130 V | |
| Coil / Supply Voltage | 110 V AC, 115 V AC | |
| Device Type | Auxiliary contact block | |
| Auxiliary Contacts | 4NO | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | MCRA Mini Contactor Relays | |
| Model | 1SAH102179R9900 | |
| Type designation | MCRA040ARJ | |
| Product type | Mini contactor relay / auxiliary contactor | |
| Coil / Supply Voltage | 110–115 V AC at 50 Hz | |
| Coil voltage at 60 Hz | 110–120 V AC | |
| Contact configuration | 4NO | |
| Number of auxiliary contacts | 4 normally open | |
| Rated operational current Ie at 400 V | 4 A | |
| AC-15 switching capability | 6 A / 240 V | |
| Rated insulation voltage | 690 V AC | |
| Mounting type | DIN rail / wall mounting | |
| Connection type | Ring tongue ferrule screw terminals | |
| Width | 45 mm | |
| Height | 48 mm | |
| Depth | 56 mm | |
| Weight | approx. 0.18 kg | |
| Protection rating | IP20 |
Frequently Asked Questions
What is the ABB 1SAH102179R9900 used for?
The ABB 1SAH102179R9900 is a mini contactor relay used for switching control signals and small electrical loads in industrial and commercial applications.
What coil voltage does the ABB 1SAH102179R9900 require?
The relay operates with a 110–115 V AC coil supply at 50 Hz and 110–120 V AC at 60 Hz.
What contact arrangement does this mini contactor relay have?
The ABB 1SAH102179R9900 features a 4NO normally open auxiliary contact arrangement.
What current can this relay switch?
The relay is designed for control switching applications up to 6 A / 240 V AC-15.
Where is this relay typically installed?
The ABB 1SAH102179R9900 is typically installed in electrical control panels, automation cabinets and industrial machinery systems.
Trusted by Automation Professionals Worldwide
ABB MCRA mini contactor relays are widely used by panel builders and automation engineers to deliver compact, reliable switching solutions for modern electrical control systems.
