Overview
The ABB MCBH-101 modular contact block is a front-mounted 22mm component designed for integration with ABB pushbutton switch operators and pilot devices. It features a 1NC (normally closed) contact configuration and is rated for operation up to 240V AC/DC, making it suitable for a wide range of industrial automation and machine control applications. This contact block is part of ABB’s modular pilot device range, allowing flexible system design and easy maintenance.
Key Features
- Self-Cleaning Contacts: Built-in wiping mechanism ensures reliable contact even under frequent or infrequent operation cycles
- Snap-In Design: Tool-free installation and removal reduces commissioning and maintenance time
- High Mechanical Endurance: 10 million cycle mechanical life rated for demanding industrial environments
- Modular Architecture: Compatible with ABB’s 22mm operator heads and contact block holders for flexible system configuration
- Wide Voltage Range: Rated for AC and DC operation from 24V through 240V
Technical Specifications
The following specifications apply to the ABB MCBH-101 contact block:
- Contact Configuration: 1NC (Normally Closed)
- Current Rating (AC): 6 A at 230 VAC
- Current Rating (DC): 5 A at 24 VDC, 1.1 A at 125 VDC
- Voltage Rating: 240V AC/DC maximum
- Mechanical Endurance: 10 million cycles
- Enclosure Rating: IP20
- Frequency Rating: 50/60 Hz
- Contact Material: Silver alloy
- Block Material: Polycarbonate
- Mounting Type: Front Mount, snap-in
- Part Number: 1SFA611605R1201
Typical Applications
The ABB MCBH-101 is commonly used in:
- Industrial machine control panels and operator interfaces
- Emergency stop (E-stop) and pushbutton control systems
- Indicator lamp circuits and pilot light modules
- Low-voltage signaling and control circuits
- Factory automation and process control systems
- Material handling and conveyor control systems
Compatibility & Replacements
The MCBH-101 is fully compatible with ABB’s 22mm modular pilot device system, including standard operator heads, contact block holders (such as the MCBH-00), and associated bezels and accessories. It can be retrofitted into existing ABB control panels by removing the old contact block and snapping in the new unit without requiring additional wiring or tools. If you require alternative contact configurations or ratings, ABB offers complementary contact blocks in the MCBH series for system flexibility.
