1SBN010040R1040 ABB CA5-40E Auxiliary Contact Block 4NO Front Mount

Why Choose the ABB 1SBN010040R1040 CA5-40E Auxiliary Contact Block?

The ABB 1SBN010040R1040, model CA5-40E, is a 4-pole front-mounted auxiliary contact block designed to expand the signalling, interlocking and control capabilities of compatible ABB contactors. Featuring four normally open instantaneous contacts, it provides additional control contacts without requiring separate relays, making it a practical accessory for industrial machinery and automation panels.

The CA5-40E is designed for front mounting on compatible ABB A-series block contactors and uses terminal markings coordinated with standard three-pole contactor configurations. Its clip-on construction allows straightforward mechanical installation, while screw terminals provide secure conductor connections for dependable industrial control wiring.

For AC control circuits, the auxiliary contacts are rated at 4 A at 220–240 V AC under AC-15 utilisation, with ratings available up to 690 V AC. The block also offers high mechanical durability, IP20 auxiliary terminal protection and a maximum mechanical switching frequency of 3600 cycles per hour, making it suitable for frequently operated industrial control systems.

Key Advantages

• Provides four additional normally open auxiliary contacts.
• Front-mounted clip-on design simplifies installation on compatible ABB contactors.
• Suitable for signalling, electrical interlocking and control circuit functions.
• 4 A AC-15 rating at 220–240 V AC.
• Auxiliary circuit insulation voltage up to 690 V IEC.
• Screw terminals provide secure industrial wiring connections.
• IP20 auxiliary terminal protection when correctly installed.
• High mechanical durability supports frequently operated machinery and automation systems.

Key Features

• ABB CA5 auxiliary contact block series.
• CA5-40E contact configuration.
• 4 NO / 0 NC instantaneous auxiliary contacts.
• Front mounting on compatible ABB block contactors.
• Clip-on mounting method.
• Screw terminal electrical connections.
• 4 A AC-15 at 220–240 V AC.
• 3 A AC-15 at 380–440 V AC.
• 2 A AC-15 at 500–690 V AC.
• Rated insulation voltage of 690 V IEC / 600 V UL/CSA.
• Rated short-time withstand current of 140 A for 1 s.
• Maximum mechanical switching frequency of 3600 cycles per hour.
• Maximum electrical switching frequency of 1200 cycles per hour.

Flexible Auxiliary Control for Industrial Contactors

Auxiliary contact blocks extend the control capabilities of a contactor without changing its main power switching function. When the associated contactor operates, the CA5-40E's four normally open contacts change state simultaneously, providing additional signals that can be used by PLC inputs, indicator circuits, interlocks and other automation equipment.

The ABB CA5-40E is particularly useful when several normally open status or control signals are required from a single contactor. Its front-mounted construction keeps the assembly compact, while the coordinated ABB accessory design provides a straightforward way to expand existing motor starters and industrial control circuits.

Typical Applications

• Contactor status and position signalling.
• Electrical interlocking circuits.
• Motor starter control systems.
• PLC and automation input signalling.
• Industrial machinery control panels.
• Conveyor and material handling equipment.
• Production and packaging machinery.
• OEM automation and switchgear assemblies.