ABB 1SAH100534R9900 MCRK031ATD is a compact four-pole mini contactor relay with 3NO and 1NC contacts, screw terminals and a 24 V DC, 2 W coil.
£53.30
The ABB 1SAH100534R9900, also designated MCRK031ATD, is a compact four-pole mini contactor relay designed for switching control signals and small loads in industrial machinery, automation equipment and building-control systems. Its space-efficient construction makes it well suited to control panels where dependable operation is required within a limited installation area.
This DC-operated contactor relay incorporates three normally open and one normally closed auxiliary contact, providing a versatile arrangement for signal switching, control sequencing and electrical interlocking. Screw terminals simplify control-panel wiring and ongoing maintenance.
The MCRK031ATD features a 24 V DC control coil with 2 W holding and pull-in consumption. It can switch AC-15 control loads up to 6 A at 240 V AC and is suitable for mounting on a DIN rail or directly onto a mounting surface.
A mini contactor relay uses an electromagnetic coil to change the state of its auxiliary contacts. Applying the rated 24 V DC control voltage energises the MCRK031ATD, closing its three normally open contacts and opening its normally closed contact.
The mixed contact arrangement supports signal distribution, feedback, control sequencing and electrical interlocking. Compact dimensions, screw terminals and flexible mounting make the relay suitable for densely populated control panels and machine-control assemblies.
| Manufacturer | ABB |
|---|---|
| Series | MCRK Mini Contactor Relays |
| Model | MCRK031ATD |
| Order code | 1SAH100534R9900 |
| Product type | Mini contactor relay |
| Number of poles | 4 |
| Auxiliary contacts | 3NO + 1NC |
| Control voltage | 24 V DC |
| Coil consumption | 2 W holding and pull-in |
| Rated operational current, AC-15 at 240 V | 6 A |
| Rated operational current, AC-15 at 400 V | 4 A |
| Rated operational current, AC-15 at 500 V | 2.5 A |
| Rated operational current, AC-15 at 690 V | 1.5 A |
| Rated operational current, DC-13 at 24 V | 5 A |
| Conventional free-air thermal current | 10 A |
| Rated auxiliary-circuit operational voltage | 690 V AC / 440 V DC |
| Rated insulation voltage | 750 V |
| Rated impulse withstand voltage | 6 kV |
| Mechanical durability | 10,000,000 operating cycles |
| Terminal type | Screw terminals |
| Protection rating | IP20 at terminals |
| Mounting type | DIN rail or wall mounting |
| Dimensions (W × H × D) | 45 × 48 × 68 mm |
| Net weight | 0.235 kg |
| Operating temperature | -40 °C to +70 °C |
| Storage temperature | -55 °C to +80 °C |
| Maximum operating altitude | 3,000 m |
| Standards | IEC/EN 60947-1, IEC/EN 60947-5-1, UL 60947-1 and UL 60947-5-1 |
It switches control signals and small auxiliary loads in industrial machinery, automation systems and electrical control panels.
The relay has three normally open and one normally closed contact, providing a 3NO + 1NC arrangement.
The MCRK031ATD requires a 24 V DC control supply.
The coil has an average holding and pull-in consumption of 2 W.
The compact contactor relay can be mounted on a compatible DIN rail or directly onto a mounting surface and connected through screw terminals.
ABB mini contactor relays combine compact construction, flexible mounting and dependable switching to support industrial machinery, automation systems and building-control applications.{ "@context": "https://schema.org/", "@type": "Product", "name": "ABB 1SAH100534R9900 MCRK031ATD Mini Contactor Relay 3NO 1NC 24 V DC", "sku": "1SAH100534R9900", "mpn": "MCRK031ATD", "brand": { "@type": "Brand", "name": "ABB" }, "category": "Mini Contactor Relays", "description": "ABB 1SAH100534R9900 MCRK031ATD is a compact four-pole mini contactor relay with 3NO and 1NC contacts, screw terminals and a 24 V DC, 2 W coil.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Auxiliary contacts", "value": "3NO + 1NC" }, { "@type": "PropertyValue", "name": "Control voltage", "value": "24 V DC" }, { "@type": "PropertyValue", "name": "Coil consumption", "value": "2 W" }, { "@type": "PropertyValue", "name": "AC-15 rating at 240 V", "value": "6 A" }, { "@type": "PropertyValue", "name": "Protection rating", "value": "IP20 at terminals" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the ABB 1SAH100534R9900 used for?", "acceptedAnswer": { "@type": "Answer", "text": "It switches control signals and small auxiliary loads in industrial machinery, automation systems and electrical control panels." } }, { "@type": "Question", "name": "How many contacts does the MCRK031ATD have?", "acceptedAnswer": { "@type": "Answer", "text": "The relay has three normally open and one normally closed contact, providing a 3NO + 1NC arrangement." } }, { "@type": "Question", "name": "What control voltage does this contactor relay require?", "acceptedAnswer": { "@type": "Answer", "text": "The MCRK031ATD requires a 24 V DC control supply." } }, { "@type": "Question", "name": "What is the coil power consumption?", "acceptedAnswer": { "@type": "Answer", "text": "The coil has an average holding and pull-in consumption of 2 W." } }, { "@type": "Question", "name": "How is the ABB 1SAH100534R9900 installed?", "acceptedAnswer": { "@type": "Answer", "text": "The compact contactor relay can be mounted on a compatible DIN rail or directly onto a mounting surface and connected through screw terminals." } } ] }
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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...
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...