Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SBH137005R1431 ABB NF31EK-14 Contactor 31A 250-500V AC/DC Coil
ABB 1SBH137005R1431 NF31EK-14 contactor relay with 3 NO and 1 NC auxiliary contacts and 250–500 V AC/DC control voltage for industrial control applications.
£34.99
Why Choose the ABB 1SBH137005R1431 NF31EK-14 Contactor Relay?
The ABB 1SBH137005R1431 is a compact and reliable contactor relay designed for switching auxiliary and control circuits in industrial automation, electrical panels and machine control systems. As part of the advanced ABB NF contactor relay series, it provides dependable switching performance with a wide-range electronic coil interface, integrated surge protection and efficient push-in spring terminal connections.
The NF31EK-14 contactor relay features a four-pole mechanically linked contact arrangement with 3 normally open and 1 normally closed auxiliary contacts, making it suitable for control, signalling and automation applications. Its wide AC/DC coil acceptance allows a single relay version to cover multiple control voltage requirements while reducing installation complexity.
With a 250–500 V AC 50/60 Hz and 250–500 V DC control supply, 3 NO + 1 NC auxiliary contacts and a 3 A rated operational current at 400 V, the ABB 1SBH137005R1431 is ideal for industrial control panels, automation systems and auxiliary switching applications.
Key Advantages
- Compact ABB NF contactor relay designed for industrial control applications.
- 3 normally open and 1 normally closed auxiliary contacts for flexible circuit switching.
- 250–500 V AC/DC control voltage range for versatile worldwide installation.
- Integrated surge protection removes the need for additional suppressor components.
- Push-in spring terminals enable fast and reliable wiring.
- Suitable for DIN rail and screw mounting installations.
Key Features
- ABB NF31EK-14 contactor relay.
- 4-pole mechanically linked contactor relay configuration.
- 3 normally open (NO) + 1 normally closed (NC) auxiliary contacts.
- 250–500 V AC 50/60 Hz control supply.
- 250–500 V DC control supply.
- 3 A rated operational current at 400 V.
- Push-in spring terminal connection technology.
- Built-in coil surge protection.
Reliable Switching for Industrial Control Systems
Contactor relays such as the ABB 1SBH137005R1431 provide dependable switching of auxiliary and control circuits used within automation systems, motor control assemblies and industrial electrical equipment. Their compact construction allows efficient panel installation while providing reliable operation for demanding applications.
The ABB NF series combines flexible coil voltage handling, integrated protection features and simplified wiring solutions, making these contactor relays suitable for machine builders, panel manufacturers and automation engineers requiring dependable control components.
Typical Applications
- Industrial automation control panels.
- PLC interface and auxiliary switching circuits.
- Machine building and OEM equipment.
- Motor control and starter assemblies.
- Industrial signalling systems.
- Electrical monitoring and control applications.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Push-in | |
|---|---|---|
| Coil Type | AC, AC/DC, DC | |
| Coil Voltage Range | 380–440 V, 460–500 V | |
| Poles | 4-pole | |
| Coil / Supply Voltage | 380 V AC, 400 V AC, 415 V AC, 440 V AC, 480 V AC, 500 V AC | |
| Device Type | Contactor relay | |
| Auxiliary Contacts | 3NO + 1NC | |
| Manufacturer | ABB | |
| Series | NF Contactors / Contactor Relays | |
| Model | NF31EK-14 | |
| Part number | 1SBH137005R1431 | |
| Product type | Contactor relay | |
| Auxiliary contacts | 3 NO + 1 NC | |
| Number of poles | 4 | |
| Rated operational current | 3 A at 400 V | |
| Control voltage | 250–500 V AC 50/60 Hz | |
| DC control voltage | 250–500 V DC | |
| Rated operational voltage | 690 V AC | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 6 kV | |
| Connection type | Push-in spring terminals | |
| Mounting type | DIN rail / screw mounting | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | 92.3 × 45 × 77 mm | |
| Weight | approx. 0.325 kg |
Frequently Asked Questions
What is the ABB 1SBH137005R1431 used for?
The ABB 1SBH137005R1431 is a contactor relay used for switching auxiliary and control circuits in industrial automation and electrical systems.
How many auxiliary contacts does the NF31EK-14 have?
The contactor relay provides 3 normally open (NO) and 1 normally closed (NC) auxiliary contacts.
What control voltage does the ABB NF31EK-14 support?
The NF31EK-14 supports a 250–500 V AC 50/60 Hz and 250–500 V DC control supply.
What type of terminals does this contactor relay use?
The ABB 1SBH137005R1431 uses push-in spring terminals for quick and reliable auxiliary circuit wiring.
Where is the ABB NF31EK-14 typically installed?
The contactor relay is typically installed inside electrical control panels, automation systems and industrial machinery assemblies.
Trusted by Industrial Automation Professionals
ABB NF contactor relays are widely used by automation engineers and machine builders to deliver reliable auxiliary switching, flexible installation and seamless integration into modern industrial control systems.
