1SAH100005R9900 ABB MCRA040ATU Mini Contactor Relay 4NO Control Relay

Q: How many contacts does this ABB mini contactor relay have?

The unit features 4 normally open (4NO) contacts for auxiliary switching applications.

Q: What coil voltage does the ABB 1SAH100005R9900 require?

The contactor relay operates with a 380–400 V AC 50 Hz coil supply and 440 V AC 60 Hz supply.

ABB 1SAH100005R9900 MCRA040ATU mini contactor relay with 4 normally open contacts designed for reliable control signal switching in industrial automation systems.

SKU: 1SAH100005R9900Alt SKU: MCRA040ATUMPN: 1SAH100005R9900

List Price £39.43 ex VAT

Your Price (ex VAT)

£39.43

Manufacturer Lead Time Estimated Delivery 7 weeks

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SUBTOTAL (EX VAT) £39.43

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Manufacturer Lead Time

£39.43

Why Choose the ABB 1SAH100005R9900 MCRA040ATU Mini Contactor Relay?

The ABB 1SAH100005R9900 is a compact and reliable mini contactor relay designed for switching control signals and small electrical loads in residential, commercial and industrial automation systems. As part of the ABB MCRA mini contactor relay series, it provides dependable electromagnetic switching performance where space-saving installation is required.

This auxiliary contactor features a 4 normally open (4NO) contact configuration with screw connection terminals, making it suitable for control circuits, automation panels and electrical switching applications. Its compact construction allows efficient integration into DIN rail mounted control assemblies.

With an AC 380–400 V coil supply at 50 Hz and 440 V at 60 Hz, the ABB 1SAH100005R9900 is ideal for industrial control systems requiring reliable auxiliary switching and compact contactor technology.

Key Advantages

Compact mini contactor relay for industrial control applications.
4NO auxiliary contact configuration for flexible control circuit switching.
DIN rail mounting design for simple electrical panel installation.
Space-saving solution for automation and building control systems.
Reliable ABB switching technology for demanding applications.
Suitable for residential, commercial and industrial installations.

Key Features

ABB MCRA040ATU mini contactor relay.
4 normally open contacts.
380–400 V AC 50 Hz coil voltage.
440 V AC 60 Hz coil voltage.
6 A rated operational current.
Screw terminal connections for reliable wiring.
DIN rail or panel mounting capability.
Compact design for space-limited control cabinets.

Reliable Control Switching for Industrial Automation

Mini contactor relays such as the ABB 1SAH100005R9900 provide dependable switching of control signals and auxiliary circuits in automation systems. Their compact size makes them particularly suitable for installations where panel space is limited while reliable operation is required.

The ABB MCRA series is designed for electricians, panel builders and automation engineers requiring efficient switching solutions for industrial machinery, building services and electrical control systems.

Typical Applications

Industrial automation control panels.
Machine control systems.
Building automation installations.
Electrical distribution boards.
Motor control circuits.
OEM machinery and production equipment.

Technical Specifications

Coil Voltage Range	380–440 V
Manufacturer	ABB
Series	MCRA Mini Contactor Relays
Model	1SAH100005R9900
Alternative type designation	MCRA040ATU
Product type	Mini contactor relay / auxiliary contactor
Coil / Supply Voltage	380–400 V AC 50 Hz / 440 V AC 60 Hz
Number of contacts	4NO
Rated operational current	6 A
Rated operational current at 400 V	4 A
Mounting type	DIN rail mounting
Connection type	Screw terminals
Dimensions (H × W × D)	48 × 45 × 56 mm
Weight	approx. 0.17 kg
Coil / Supply Voltage	380 V AC, 400 V AC, 440 V AC
Device Type	Auxiliary contact block
Coil Type	AC

Frequently Asked Questions

What is the ABB 1SAH100005R9900 used for?

The ABB 1SAH100005R9900 is a mini contactor relay used for switching control signals and small electrical loads in automation and electrical control systems.

How many contacts does this ABB mini contactor relay have?

The unit features 4 normally open (4NO) contacts for auxiliary switching applications.

What coil voltage does the ABB 1SAH100005R9900 require?

The contactor relay operates with a 380–400 V AC 50 Hz coil supply and 440 V AC 60 Hz supply.

Where is the ABB 1SAH100005R9900 installed?

The device is typically installed on DIN rails inside electrical control panels, automation cabinets and distribution systems.

What applications are suitable for this mini contactor relay?

It is suitable for industrial automation, building control, machinery and electrical switching applications requiring compact auxiliary control.

Trusted by Automation Professionals Worldwide

ABB MCRA mini contactor relays are widely used by electrical installers and automation engineers to deliver reliable control switching, compact installation and dependable performance in modern electrical systems.

UK delivery

Delivery options

Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.

This product Manufacturer Lead Time

Estimated Delivery 7 weeks

Standard delivery

£8 ex VAT · free over £200

UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.

Heavier items may be charged at a weight-based or pallet rate, shown at checkout.

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Mon–Fri, 8am–5pm

Order and pay online, then collect from our showroom.

Please allow 15–30 minutes after ordering for us to prepare your order.

Northern Ireland, ROI & export

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We deliver to Northern Ireland, the Republic of Ireland and overseas.

Delivery is calculated at checkout based on your destination.

Orders with mixed availability

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If part of your order is on a lead time, we hold it and send everything together.

Need the in-stock items sooner? Ask us and we can split the delivery.

Business customer returns

Returns & order support

Need to return an item? Find the guidance for your order below, then contact our team before sending anything back.

Stocked items

Request within 30 days

Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.

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Faulty or damaged items

Tell us as soon as possible

Faulty, damaged on delivery or the wrong product supplied? Contact our team as soon as possible with the details.

We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.

Made-to-order items

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Manufactured, configured and special-order products can only be returned with the manufacturer’s approval. Any handling charge is agreed with you when you request the return.

This does not affect claims for faulty goods or items that do not meet the agreed specification.

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Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.

Email returns team 01706 242050

The 30-day return request period applies to change-of-mind returns for stocked items. It does not limit your statutory rights for faulty or non-conforming goods.

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