ABB 1SAH100000R9900 MCRC040ATB is a compact four-pole mini contactor relay with four normally open contacts, a 12 V DC control supply and screw-terminal connections for control and small-load switching applications.
£50.69
The ABB 1SAH100000R9900, type MCRC040ATB, is a compact four-pole mini contactor relay designed for control functions and the switching of small electrical loads. Part of ABB’s M range of mini contactors and mini contactor relays, its space-saving construction makes it suitable for residential, commercial and industrial control applications where panel space is limited.
The MCRC040ATB features four normally open (4NO) auxiliary contacts and screw-terminal connections. Its DC-operated control circuit uses a 12 V DC rated control supply voltage, providing a compact switching solution for low-voltage control systems.
Designed for switching control signals and small loads up to 6 A at 240 V AC in AC-15 applications, the MCRC040ATB can be mounted on a rail or directly to a mounting surface. Its compact dimensions of 48 × 45 × 68 mm help reduce the space required for auxiliary switching inside electrical control panels.
Mini contactor relays such as the ABB MCRC040ATB provide multiple electrically operated contacts for switching control signals within machinery, building services and automation systems. The four normally open contacts allow several control circuits to be operated simultaneously from the 12 V DC coil.
The ABB MCRC range is designed to combine high switching performance with compact dimensions. Additional auxiliary contact blocks can be mounted at the front or side, allowing the contact arrangement to be expanded where a control application requires additional switching points.
| Manufacturer | ABB |
|---|---|
| Series | MCRC |
| Model | MCRC040ATB |
| ABB order code | 1SAH100000R9900 |
| Product type | Mini contactor relay |
| Number of poles | 4 |
| Contact configuration | 4NO |
| Rated control supply voltage | 12 V DC |
| Control circuit | DC operated |
| AC-15 switching capability | Up to 6 A at 240 V AC |
| Conventional free-air thermal current (Ith), auxiliary circuit | 10 A |
| Connection type | Screw terminals |
| Auxiliary circuit tightening torque | 0.8–1.0 N·m |
| Control circuit tightening torque | 0.8 N·m |
| Mounting type | Rail or wall mounting |
| Dimensions (H × W × D) | 48 × 45 × 68 mm |
| Weight | 0.235 kg |
The ABB 1SAH100000R9900 is the order code for the MCRC040ATB four-pole mini contactor relay, designed for control functions and switching small electrical loads.
The MCRC040ATB has four normally open contacts (4NO).
The MCRC040ATB uses a 12 V DC rated control supply voltage.
ABB specifies the MCRC mini contactor relays for control functions and switching small loads, with the MCRC040ATB suitable for switching control signals up to 6 A at 240 V AC in AC-15 applications.
The mini contactor relay is suitable for rail or wall mounting, allowing flexible installation in electrical control assemblies.
ABB M series mini contactors and mini contactor relays provide compact switching solutions for control functions and small loads in residential, commercial and industrial electrical applications.{ "@context": "https://schema.org/", "@type": "Product", "name": "ABB MCRC040ATB Mini Contactor Relay 4NO 12 V DC", "sku": "1SAH100000R9900", "mpn": "MCRC040ATB", "brand": { "@type": "Brand", "name": "ABB" }, "category": "Mini Contactor Relays", "description": "ABB 1SAH100000R9900 MCRC040ATB is a compact four-pole mini contactor relay with four normally open contacts, a 12 V DC control supply and screw-terminal connections for control and small-load switching applications.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Contact configuration", "value": "4NO" }, { "@type": "PropertyValue", "name": "Control supply voltage", "value": "12 V DC" }, { "@type": "PropertyValue", "name": "AC-15 switching capability", "value": "Up to 6 A at 240 V AC" }, { "@type": "PropertyValue", "name": "Connection type", "value": "Screw terminals" }, { "@type": "PropertyValue", "name": "Dimensions", "value": "48 × 45 × 68 mm" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the ABB 1SAH100000R9900?", "acceptedAnswer": { "@type": "Answer", "text": "The ABB 1SAH100000R9900 is the order code for the MCRC040ATB four-pole mini contactor relay, designed for control functions and switching small electrical loads." } }, { "@type": "Question", "name": "What contact configuration does the ABB MCRC040ATB have?", "acceptedAnswer": { "@type": "Answer", "text": "The MCRC040ATB has four normally open contacts (4NO)." } }, { "@type": "Question", "name": "What control voltage does the ABB MCRC040ATB require?", "acceptedAnswer": { "@type": "Answer", "text": "The MCRC040ATB uses a 12 V DC rated control supply voltage." } }, { "@type": "Question", "name": "What can the ABB MCRC040ATB switch?", "acceptedAnswer": { "@type": "Answer", "text": "ABB specifies the MCRC mini contactor relays for control functions and switching small loads, with the MCRC040ATB suitable for switching control signals up to 6 A at 240 V AC in AC-15 applications." } }, { "@type": "Question", "name": "How can the ABB MCRC040ATB be mounted?", "acceptedAnswer": { "@type": "Answer", "text": "The mini contactor relay is suitable for rail or wall mounting, allowing flexible installation in electrical control assemblies." } } ] }
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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...