ABB cat4-11m front mounted instantaneous aux contact block with a1/a2 coil terminal blocks

Why Choose the ABB CAT4-11M Auxiliary Contact and Coil Terminal Block?

The ABB CAT4-11M auxiliary contact and coil terminal block is a compact and highly reliable front-mounted auxiliary contact accessory designed for use with ABB AF and AFC contactors in industrial automation and motor control systems. Identified by part number 1SBN010151R1111, this accessory forms part of the trusted ABB CAT4 accessory series, engineered for dependable signalling and control functionality in demanding industrial environments.

The CAT4-11M provides 1 normally open (1 NO) and 1 normally closed (1 NC) instantaneous auxiliary contacts together with integrated A1/A2 front coil terminal connections, enabling simplified wiring, expanded monitoring and control circuit functionality within electrical panels and automation systems.

Featuring durable screw terminals, compact construction, and compatibility with ABB AF and AFC contactors, the CAT4-11M delivers dependable switching performance in industrial motor control, HVAC systems, machinery and general automation applications.

Key Advantages

• Reliable 1 NO + 1 NC auxiliary signalling contacts.
• Integrated A1/A2 coil terminal connection simplifies panel wiring.
• Front-mounted design for rapid installation.
• Compatible with ABB AF and AFC contactors.
• Compact dimensions for efficient panel utilisation.
• Durable screw terminal connections.
• Suitable for industrial control and automation systems.

Key Features

• ABB CAT4 auxiliary contact block series.
• 1 NO + 1 NC instantaneous contacts.
• Integrated front A1/A2 coil terminal access.
• Front mounting onto compatible ABB contactors.
• Screw clamp terminals.
• Designed for AF and AFC contactor series.
• Mechanical durability up to 10 million operations.
• Compact lightweight construction.
• Supports auxiliary and control circuit switching.
• Suitable for standard industrial environments.

Technical Specifications

• Manufacturer: ABB
• Series: CAT4
• Model: CAT4-11M
• Part number: 1SBN010151R1111
• Product type: Auxiliary contact and coil terminal block
• Contact configuration: 1 NO + 1 NC
• Number of poles: 2P
• Mounting type: Front mounted
• Terminal type: Screw terminals
• Integrated coil terminals: A1 / A2 front terminals
• Rated operational current AC-15: 6 A at 24/127 V AC, 4 A at 220/240 V AC, 3 A at 400/440 V AC
• Rated operational current DC-13: 6 A at 24 V DC
• Rated operational voltage: Auxiliary circuit 24 to 690 V AC
• Rated insulation voltage: 690 V
• Rated frequency: 50 / 60 Hz
• Impulse withstand voltage: 6 kV
• Conventional free-air thermal current: 16 A
• Maximum electrical switching frequency: 1200 cycles/hour AC-15
• Maximum mechanical switching frequency: 3600 cycles/hour
• Mechanical durability: approx. 10 million operations
• Compatible contactors: ABB AF09 to AF96, AFC09 to AFC96 series
• Operating temperature: approx. -40 °C to +70 °C
• Protection rating: IP20
• Standards: IEC/EN 60947-5-1, UL 60947-5-1, CSA C22.2
• Dimensions (W × H × D): approx. 45 × 43 × 31.6 mm
• Weight: approx. 0.04 kg

Reliable Auxiliary Control and Simplified Wiring

Auxiliary contact blocks are used to expand the signalling and control functionality of contactors within industrial automation systems. The integrated A1/A2 front coil terminal arrangement simplifies control wiring and improves accessibility inside electrical panels.

The ABB CAT4 series is widely used in motor starters, machinery panels and building automation systems where reliable auxiliary switching, compact installation and simplified maintenance are essential for dependable industrial operation.

Typical Applications

• Industrial motor starters and contactor assemblies.
• Control and signalling circuits.
• HVAC and ventilation systems.
• OEM machinery and automation equipment.
• Conveyor and material handling systems.
• Industrial process control panels.

Trusted by Industrial Control Engineers

ABB CAT4 auxiliary contact blocks are trusted worldwide for dependable signalling performance, simplified wiring and reliable operation in industrial automation and motor control applications.