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1SFA611610R2002 ABB MCB-20B Contact Block
ABB MCB-20B contact block, a rear mounting auxiliary contact block with two normally open silver contacts for ABB modular pilot devices and industrial control systems.
£8.15
Why Choose the ABB MCB-20B Contact Block?
The ABB 1SFA611610R2002 MCB-20B is a reliable auxiliary contact block designed for ABB modular plastic pilot devices, providing dependable switching performance for industrial control and signalling applications. As part of the ABB modular plastic range, it offers flexible configuration, high mechanical durability and reliable operation for machine builders and automation engineers.
This contact block features a non-illuminated design with rear mounting capability and silver contacts, allowing straightforward integration into ABB push buttons, selector switches and operator control assemblies. Its self-cleaning contact design supports reliable operation while helping reduce maintenance requirements in industrial environments.
With a configuration of 2 normally open (NO) contacts, the ABB MCB-20B provides additional switching capability for control circuits. Its rated insulation voltage of 690 V and compact construction make it suitable for a wide range of industrial automation and machine control applications.
Key Advantages
- Compact auxiliary contact block for ABB modular plastic pilot devices.
- 2 normally open (NO) contacts for flexible control circuit configuration.
- Silver (Ag) contacts for reliable switching performance.
- Rear mounting design for simple installation within operator devices.
- High mechanical durability rated up to 10 million operations.
- Suitable for industrial automation, control panels and machine building applications.
Key Features
- ABB MCB-20B contact block.
- Product code: 1SFA611610R2002.
- Non-illuminated double contact block.
- 2 normally open (NO) contacts.
- Silver (Ag) contact material.
- Rear mounting configuration.
- Screw terminal connection system.
- Part of the ABB modular plastic pilot device range.
Reliable Switching for Industrial Control Systems
Auxiliary contact blocks provide additional switching functions within industrial control circuits, allowing operators and automation systems to monitor and control equipment status. The ABB MCB-20B is engineered to deliver reliable electrical performance and long service life in industrial environments.
The ABB modular plastic range provides flexible operator interface solutions for OEM machine builders and panel manufacturers. The MCB-20B contact block enables efficient integration with compatible ABB pilot devices while maintaining dependable switching performance.
Typical Applications
- Industrial control panels.
- Machine automation systems.
- Operator control stations.
- Push button assemblies.
- Selector switch applications.
- OEM electrical control solutions.
Technical Specifications
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| Contacts | 2NO | |
|---|---|---|
| Device Type | Contact Block | |
| Product Series | ABB Modular | |
| IP Rating | IP20 | |
| Manufacturer | ABB | |
| Series | Modular Plastic Range | |
| Model | MCB-20B | |
| Product code | 1SFA611610R2002 | |
| Product type | Auxiliary contact block | |
| Function | Non-illuminated double contact block | |
| Contact material | Silver (Ag) | |
| Mounting type | Rear mounting | |
| Number of NO contacts | 2 | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 6 kV | |
| Rated frequency | 50 / 60 Hz | |
| Rated operational current AC-15 | 6 A at 230 V AC | |
| Rated operational current DC-13 | 5 A at 24 V; 0.55 A at 125 V | |
| Protection rating | IP20 (terminals) | |
| Pollution degree | 3 | |
| Mechanical durability | 10 million operations | |
| Power loss | Maximum 5 W | |
| Terminal type | Screw terminals | |
| Tightening torque | 0.9 N·m | |
| Dimensions (W × H × D) | 20 × 44 × 28 mm | |
| Weight | approx. 0.04 kg | |
| Ambient operating temperature | -25 to +70 °C |
Frequently Asked Questions
What is the ABB MCB-20B used for?
The ABB MCB-20B is an auxiliary contact block used with ABB modular plastic pilot devices to provide additional switching contacts in industrial control applications.
How many contacts does the MCB-20B have?
The MCB-20B has 2 normally open (NO) contacts and no normally closed contacts.
What type of contacts are used in the ABB MCB-20B?
The MCB-20B uses silver (Ag) contacts for reliable switching performance.
What voltage rating does the ABB MCB-20B support?
The MCB-20B has a rated insulation voltage of 690 V.
How is the ABB MCB-20B installed?
The contact block is designed for rear mounting with screw terminal connections.
Trusted by Industrial Control Engineers
ABB modular contact blocks are widely used in industrial automation and machine control applications where reliable switching, flexible configuration and long service life are required.
