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1SBN010146R1231 ABB CA4-31NK Auxiliary Contact Block 3NO 1NC Front Mount
ABB CA4-31NK four-pole auxiliary contact block with 3 NO and 1 NC contacts designed for expanding industrial contactor control and monitoring circuits.
£14.71
Why Choose the ABB CA4-31NK Auxiliary Contact Block?
The ABB CA4-31NK is a compact and reliable four-pole auxiliary contact block designed to expand the control and signalling capabilities of ABB contactors and contactor relays. As part of the proven ABB CA4 auxiliary contact block series, it provides additional switching contacts for industrial automation, motor control and electrical control panel applications.
This auxiliary contact block is designed for front mounting on compatible ABB AF contactors and contactor relays. The CA4-31NK uses push-in spring terminals to provide faster installation, simplified wiring and reliable connections for industrial control systems.
With a contact configuration of 3 normally open and 1 normally closed instantaneous contacts, the ABB CA4-31NK provides flexible auxiliary switching capability for monitoring, signalling and interlocking applications. It supports auxiliary circuits up to 690 V and is suitable for standard industrial environments.
Key Advantages
- Compact ABB auxiliary contact block for industrial control applications.
- 3 NO + 1 NC contact configuration for flexible control circuit expansion.
- Front-mounted design for simple installation on compatible ABB contactors.
- Push-in spring terminals provide fast and reliable wiring.
- Improves monitoring, signalling and interlocking functions in automation systems.
- Designed for dependable operation in industrial control environments.
Key Features
- ABB CA4 auxiliary contact block series.
- CA4-31NK model.
- 4-pole auxiliary contact configuration.
- 3 normally open (NO) + 1 normally closed (NC) instantaneous contacts.
- Push-in spring terminal connections.
- Front mounting / clip-on design for compatible ABB contactors.
- Auxiliary circuit voltage up to 690 V.
- Compatible with ABB AF contactors and contactor relays.
Enhanced Control for Industrial Automation
Auxiliary contact blocks such as the ABB CA4-31NK extend the functionality of contactors by providing additional contacts for feedback, signalling, electrical interlocking and control functions. This enables engineers to create more flexible and reliable automation systems.
The CA4 series provides a simple method of customising contactor assemblies while maintaining compact electrical panel layouts. Its robust construction and push-in terminal technology support efficient installation and dependable operation in industrial environments.
Typical Applications
- Industrial motor control panels.
- Automation and machine building systems.
- Contactor feedback and status monitoring circuits.
- Electrical interlocking applications.
- Industrial signalling and control systems.
- OEM control panel assemblies.
Technical Specifications
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| Terminal Type | Push-in | |
|---|---|---|
| Device Type | Auxiliary contact block | |
| Manufacturer | ABB | |
| Series | CA4 Auxiliary Contact Blocks | |
| Model | CA4-31NK | |
| Part number | 1SBN010146R1231 | |
| Product type | Auxiliary contact block | |
| Number of contacts | 4 | |
| Contact configuration | 3 NO + 1 NC | |
| Contact type | Instantaneous auxiliary contacts | |
| Mounting type | Front mounting | |
| Terminal type | Push-in spring terminals | |
| Conventional free-air thermal current | 16 A | |
| Rated operational voltage | 24–690 V auxiliary circuit | |
| Rated operational current AC-15 | 4 A at 220/240 V | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 6 kV | |
| Protection rating | IP20 auxiliary terminals | |
| Dimensions (H × W × D) | 45 × 43 × 39.5 mm | |
| Weight | approx. 0.05 kg |
Frequently Asked Questions
What is the ABB CA4-31NK used for?
The ABB CA4-31NK is used to add auxiliary switching contacts to compatible ABB contactors and contactor relays for monitoring, signalling and control applications.
What contact configuration does the CA4-31NK have?
The auxiliary contact block has 3 normally open and 1 normally closed instantaneous contacts.
How is the CA4-31NK installed?
The CA4-31NK uses a front-mounted clip-on design for installation on compatible ABB contactors and contactor relays.
What type of terminals does this auxiliary contact block use?
The CA4-31NK uses push-in spring terminals for quick wiring and reliable electrical connections.
Which ABB products are compatible with the CA4-31NK?
The CA4-31NK is designed for use with compatible ABB AF contactors and contactor relays.
Trusted by Industrial Automation Professionals
ABB auxiliary contact blocks are widely used by engineers and machine builders to expand contactor functionality, improve system monitoring and create reliable industrial control solutions.
