1SAH102180R9900 ABB MCRA031AR1 Mini Contactor Relay 3NO 1NC Control Relay

1SAH102180R9900 ABB MCRA031AR1 Mini Contactor Relay 3NO 1NC Control Relay

ABB 1SAH102180R9900 MCRA031AR1 mini contactor relay with 24 V AC coil and 3NO plus 1NC contacts designed for industrial control applications.

SKU: 1SAH102180R9900Alt SKU: MCRA031AR1MPN: 1SAH102180R9900
Price
List Price £39.43 ex VAT
Your Price (ex VAT)
£39.43
Manufacturer Lead Time Estimated Delivery 7 weeks
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

SUBTOTAL (EX VAT) £39.43
Trade pricing is personalised to your account

Manufacturer Lead Time

£39.43

Why Choose the ABB 1SAH102180R9900 Mini Contactor Relay?

The ABB 1SAH102180R9900 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, special screw terminals for ring tongue ferrule connections and flexible wall or rail mounting options, making it suitable for residential, commercial and industrial control applications.

With a 24 V AC coil supply, 3 normally open and 1 normally closed auxiliary contacts and a compact design, the ABB 1SAH102180R9900 is ideal for automation panels, electrical control systems and applications requiring reliable auxiliary switching.

Key Advantages

  • Compact mini contactor relay designed for control applications.
  • 3NO + 1NC auxiliary contact configuration for flexible circuit control.
  • 24 V AC coil voltage suitable for common 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.
  • 3 normally open (NO) auxiliary contacts.
  • 1 normally closed (NC) auxiliary contact.
  • 24 V AC 50 / 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 1SAH102180R9900 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

Coil Voltage Range 24 V
Manufacturer ABB
Series MCRA Mini Contactor Relays
Model 1SAH102180R9900
Type designation MCRA031AR1
Product type Mini contactor relay / auxiliary contactor
Coil / Supply Voltage 24 V AC
Coil frequency 50 / 60 Hz
Contact configuration 3NO + 1NC
Number of auxiliary contacts 3 normally open + 1 normally closed
Rated operational current at 400 V 4 A
Conventional thermal current 10 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
Dimensions (H × W × D) 48 × 45 × 56 mm
Weight approx. 0.17 kg
Protection rating IP20
Coil / Supply Voltage 24 V AC
Device Type Auxiliary contact block
Auxiliary Contacts 3NO
Coil Type AC

Frequently Asked Questions

What is the ABB 1SAH102180R9900 used for?

The ABB 1SAH102180R9900 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 1SAH102180R9900 require?

The relay operates with a 24 V AC coil supply at 50 / 60 Hz.

What contact arrangement does this mini contactor relay have?

The ABB 1SAH102180R9900 features a 3NO + 1NC 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 1SAH102180R9900 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.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...