ABB ca4-40u front mounted 4no instantaneous aux contact block

Why Choose the ABB CA4-40E Auxiliary Contact Block?

The ABB CA4-40E auxiliary contact 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 1SBN010140R1340, this auxiliary block forms part of the trusted ABB CA4 accessory series, engineered for dependable signalling and control functionality in demanding industrial environments.

The CA4-40E provides 4 normally open (4 NO) instantaneous auxiliary contacts, enabling expanded control, monitoring and signalling functionality within electrical panels and automation systems. Its compact front-mounted design allows rapid installation directly onto compatible ABB contactors without requiring specialised tools.

Featuring durable screw terminals, a compact 4-pole housing, and terminal marking designed to match ABB AF and AFC contactors, the CA4-40E delivers dependable switching performance in industrial motor control, HVAC systems, machinery and general automation applications.

Key Advantages

• Reliable 4 NO auxiliary signalling contacts.
• 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.
• High mechanical durability for frequent switching operations.

Key Features

• ABB CA4 auxiliary contact block series.
• 4 NO instantaneous contacts.
• 4-pole auxiliary contact block.
• Front mounting onto compatible ABB contactors.
• Screw clamp terminals.
• Mechanical durability up to 10 million operations.
• Suitable for standard industrial environments.
• Compact lightweight construction.
• Terminal marking matched to AF and AFC contactors.
• Supports auxiliary and control circuit switching.

Technical Specifications

• Manufacturer: ABB
• Series: CA4
• Model: CA4-40E
• Part number: 1SBN010140R1340
• Product type: Auxiliary contact block
• Contact configuration: 4 NO
• Number of poles: 4P
• Mounting type: Front mounted
• Terminal type: Screw terminals
• Rated operational current: 6 A
• Rated operational voltage: 24 to 690 V AC / up to 600 V DC
• Rated insulation voltage: 690 V
• Impulse withstand voltage: 6 kV
• Conventional free-air thermal current: 16 A
• Electrical switching frequency: 1200 cycles/hour AC-15, 900 cycles/hour DC-13
• Mechanical switching frequency: 3600 cycles/hour
• Mechanical durability: approx. 10 million operations
• Compatible contactors: ABB AF09...AF96 and AFC09...AFC38 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. 46 × 46 × 46 mm
• Weight: approx. 0.055 kg

Reliable Auxiliary Control and Signalling

Auxiliary contact blocks are used to expand the control and signalling functionality of contactors and relays within industrial automation systems. They enable additional status indication, interlocking and control logic without modifying the main power circuit.

The ABB CA4 series is widely used in motor starters, machinery panels and building automation systems where reliable auxiliary switching, compact installation and long mechanical life 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 CA4 auxiliary contact blocks are trusted worldwide for dependable signalling performance, compact installation and reliable operation in industrial automation and motor control applications.