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1SFA611605R1121 ABB MCBH-12 Block Holder with 1 NO + 2 NC Contact Blocks
ABB MCBH-12 is a modular 22 mm pilot device contact block assembly combining a three-position holder with one normally open and two normally closed silver contacts for industrial control and automation applications.
£12.84
Why Choose the ABB MCBH-12 Block Holder with Contact Blocks?
The ABB MCBH-12 is a modular contact block assembly with a three-position holder, one normally open and two normally closed contacts, designed for ABB's 22 mm modular pilot device range. Supplied under ABB order code 1SFA611605R1121, it provides a ready-assembled switching solution for compatible pushbuttons, emergency stop operators, selector switches and other industrial control devices.
The MCBH-12 combines a 1 NO + 2 NC contact configuration with ABB's three-position holder. This mixed contact arrangement provides three independent switching contacts in one compact assembly, making it suitable for applications requiring simultaneous normally open and normally closed signalling or control functions.
Designed for front mounting behind compatible ABB modular operators, the MCBH-12 uses silver contacts and screw-terminal connections for reliable industrial wiring. It is rated for up to 690 V, offers high mechanical durability and integrates directly with ABB's modular plastic pilot device system.
Key Advantages
- Complete three-position holder with three contact blocks.
- 1 NO + 2 NC contact configuration provides flexible control and signalling options.
- Designed for ABB's 22 mm modular pilot device system.
- Front-mounted modular construction simplifies installation behind compatible operators.
- Screw-terminal connections provide secure and straightforward control-panel wiring.
- High mechanical durability supports reliable operation in industrial machinery and automation systems.
Key Features
- ABB MCBH modular contact block assembly.
- 1 normally open + 2 normally closed contacts.
- Three contact blocks supplied with holder.
- Three-position holder.
- Suitable for ABB 22 mm modular pilot devices.
- Front mounting.
- Silver (Ag) contacts.
- Screw-terminal connection.
- Non-illuminated accessory.
- 690 V rated insulation voltage.
Flexible Contact Switching for ABB Pilot Devices
Contact blocks convert the mechanical movement of a panel-mounted operator into electrical switching within a control circuit. The ABB MCBH-12 provides one normally open and two normally closed contacts, allowing a single operator action to provide multiple control, interlocking or signalling functions where the circuit design requires both NO and NC switching.
The integrated three-position holder simplifies assembly by combining the contact blocks and mounting interface into one modular unit. The MCBH-12 can be paired with a wide range of compatible ABB modular pushbuttons, selector switches, emergency stop operators and other 22 mm pilot devices, providing a convenient method of configuring the required switching arrangement behind the panel operator.
Typical Applications
- Industrial pushbutton and selector switch assemblies.
- Emergency stop and machine stop operator assemblies.
- Machine interlocking and control circuits.
- Automation and industrial control panels.
- Production and manufacturing equipment.
- Conveyor and material handling controls.
- OEM machinery and electrical control assemblies.
Technical Specifications
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| Contacts | 1NO + 2NC | |
|---|---|---|
| Product Series | ABB Modular | |
| Illumination | Non-illuminated | |
| Device Type | Contact Block | |
| Series | Modular Plastic Pilot Devices | |
| Order code | 1SFA611605R1121 | |
| Product type | Contact block assembly with holder | |
| ABB product group | 312001-Pilot Devices (Secrl) | |
| Accessory type | Contact blocks and holders | |
| Contact configuration | 1 NO + 2 NC | |
| Normally open contacts | 1 | |
| Normally closed contacts | 2 | |
| Total contact blocks | 3 | |
| Holder capacity | 3 positions | |
| Contact material | Silver (Ag) | |
| Pilot device standard | 22 mm | |
| Mounting method | Front mounting | |
| Electrical connection | Screw terminals | |
| Rated insulation voltage | 690 V | |
| Rated operational current AC-15 | 6 A at 220–240 V AC | |
| Rated operational current DC-13 | 1.1 A at 125 V DC | |
| Auxiliary terminal protection | IP20 | |
| Illumination | Non-illuminated | |
| Mechanical durability | 10 million operations | |
| Product width | 48 mm | |
| Product height | 30 mm | |
| Product depth | 36 mm | |
| GTIN / EAN | 7320500307540 |
Frequently Asked Questions
What is the ABB MCBH-12?
The MCBH-12 is an ABB modular contact block assembly with a three-position holder, one normally open contact and two normally closed contacts for compatible 22 mm pilot devices.
What contact configuration does the ABB MCBH-12 have?
The ABB MCBH-12 has a 1 NO + 2 NC configuration, providing one normally open and two normally closed contacts.
Does the ABB MCBH-12 include the holder?
Yes. The MCBH-12 is supplied with a three-position holder and three contact blocks, providing a complete 1 NO + 2 NC assembled contact configuration.
Which ABB pilot devices can the MCBH-12 be used with?
The MCBH-12 is designed for ABB's 22 mm modular plastic pilot device range and can be used with compatible pushbuttons, selector switches, emergency stop operators and other modular control operators.
What is the ABB order code for the MCBH-12?
The ABB order code for the MCBH-12 holder with 1 NO + 2 NC contact blocks is 1SFA611605R1121.
Trusted Industrial Control from ABB
ABB modular contact blocks and holders provide flexible switching configurations for industrial pilot devices, supporting reliable integration of pushbuttons, selector switches, emergency stop operators and other operator controls into machinery and automation systems.
