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1SFA611610R2011 ABB MCB-11B 1 NO + 1 NC Rear-Mount Double Contact Block
ABB MCB-11B is a rear-mounted double contact block with one normally open and one normally closed silver contact, screw-clamp terminals and a maximum rated operational voltage of 690 V for compatible ABB Modular pilot devices.
£8.15
Why Choose the ABB MCB-11B Contact Block?
The ABB MCB-11B is a double contact block designed for rear mounting with compatible ABB Modular pilot devices. It combines one normally open (1 NO) and one normally closed (1 NC) contact in a single compact assembly, providing complementary switching functions for industrial control, signalling and interlocking circuits.
The MCB-11B uses durable silver (Ag) contacts and screw-clamp terminals for secure field wiring. Rated for operational voltages up to 690 V, the contact block provides strong electrical performance for industrial machinery and control-panel applications while its self-cleaning contact design supports dependable long-term operation.
Designed for rear mounting, the MCB-11B is supplied without a holder and is compatible with a wide range of ABB pushbuttons, selector switches, machine-stop and emergency-stop operators. ABB identifies this exact contact block under order code 1SFA611610R2011.
Key Advantages
- 1 NO + 1 NC double contact block provides complementary switching functions.
- Rear mounting configuration for compatible ABB Modular pilot devices.
- Durable silver (Ag) contacts for reliable industrial switching.
- Rated operational voltage up to 690 V.
- Screw-clamp terminals provide secure and conventional field wiring.
- IP20 terminal protection when correctly installed.
- High mechanical durability for demanding industrial control applications.
Key Features
- ABB MCB-11B contact block.
- Double contact block construction.
- 1 NO + 1 NC contact configuration.
- Silver (Ag) contacts.
- Rear mounting.
- Non-illuminated.
- Supplied without holder.
- Screw-clamp connection.
- 690 V maximum rated operational voltage.
- 10 million operations mechanical durability.
Reliable Complementary Switching for Industrial Controls
The ABB MCB-11B combines normally open and normally closed contacts within one double contact block, allowing a compatible operator to make one circuit while simultaneously breaking another. This arrangement is useful for machine control, electrical interlocking, auxiliary signalling and other applications requiring complementary switching from a single operator.
Its rear-mounted modular construction makes the MCB-11B suitable for use with a broad selection of compatible ABB Modular pilot devices. Screw-clamp terminals simplify field wiring, while silver contacts and high mechanical durability support dependable operation throughout demanding industrial service.
Typical Applications
- Industrial pushbutton control circuits.
- Selector switch assemblies.
- Machine start and stop controls.
- Electrical interlocking circuits.
- Auxiliary control and signalling functions.
- Industrial operator stations and OEM control panels.
Technical Specifications
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| Contacts | 1NO + 1NC | |
|---|---|---|
| Device Type | Contact Block | |
| Product Series | ABB Modular | |
| Illumination | Non-illuminated | |
| Series | MCB / Modular Plastic Pilot Devices | |
| ABB order code | 1SFA611610R2011 | |
| Product group | 312001 – Pilot Devices (Secrl) | |
| Product type | Contact block | |
| Contact block type | Double contact block | |
| Contact configuration | 1 NO + 1 NC | |
| Normally open contacts | 1 | |
| Normally closed contacts | 1 | |
| Contact material | Silver (Ag) | |
| Mounting type | Rear mounting | |
| Holder | Not included | |
| Illumination | Non-illuminated | |
| Connection type | Screw clamp | |
| Terminal type | Screw terminals | |
| Rated insulation voltage | 690 V | |
| Maximum rated operational voltage | 690 V | |
| Rated impulse withstand voltage | 6 kV | |
| Rated frequency | 50/60 Hz | |
| Rated operational current, AC-15 at 230 V AC | 6 A | |
| Rated operational current, DC-13 at 24 V DC | 5 A | |
| Mechanical durability | 10 million operations | |
| Terminal protection | IP20 | |
| Operating temperature | -25 to +70 °C | |
| Storage temperature | -40 to +85 °C | |
| Tightening torque | 0.9 N·m | |
| Wire stripping length | 8 mm | |
| Product net width | 20 mm | |
| Product net height | 44 mm | |
| Product net depth | 28 mm | |
| Product net weight | 0.026 kg |
Frequently Asked Questions
What contact configuration does the ABB MCB-11B have?
The ABB MCB-11B is a double contact block with one normally open (1 NO) and one normally closed (1 NC) contact.
Is the ABB MCB-11B front or rear mounted?
The MCB-11B is designed for rear mounting with compatible ABB Modular pilot devices.
What type of contacts does the MCB-11B use?
The MCB-11B uses silver (Ag) contacts and provides one normally open and one normally closed switching contact.
What is the maximum rated operational voltage of the MCB-11B?
The ABB MCB-11B has a maximum rated operational voltage of 690 V and a rated insulation voltage of 690 V.
What is the ABB order code for the MCB-11B?
The ABB order code for the MCB-11B contact block is 1SFA611610R2011.
Trusted Industrial Control Components from ABB
ABB Modular contact blocks provide dependable switching interfaces for industrial machinery and automation systems, combining flexible modular construction, robust electrical ratings and durable contacts for demanding control applications.
