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1SBH137063R1440 ABB NFB40EK-14 Contactor 250-500V AC/DC Coil
ABB NFB40EK-14 is a 4-pole railway contactor relay with 4 normally open contacts, Push-in Spring terminals and a 250–500 V AC/DC control voltage range for reliable switching of auxiliary and control circuits in rolling stock.
£83.57
Why Choose the ABB NFB40EK-14 Contactor Relay?
The ABB NFB40EK-14, order code 1SBH137063R1440, is a compact 4-pole contactor relay designed for switching auxiliary and control circuits in railway rolling stock and demanding industrial applications. As part of the ABB NFB railway contactor relay range, it is engineered for dependable operation in onboard electrical systems where reliable switching, compact dimensions and railway-qualified performance are required.
The NFB40EK-14 features 4 normally open contacts together with an electronic coil interface covering a wide 250–500 V AC 50/60 Hz and 250–500 V DC control voltage range. Integrated surge suppression helps protect the control circuit and removes the need for a separate external coil surge suppressor.
With four normally open auxiliary contacts and Push-in Spring connection technology, the NFB40EK-14 provides a practical solution for signalling, interlocking and automation functions in rolling stock. Its compact construction supports space-efficient installation in railway electrical cabinets while the NFB design is engineered to withstand demanding shock, vibration, fire and smoke conditions associated with rail applications.
Key Advantages
- Compact 4-pole contactor relay designed for railway rolling stock.
- 4 NO contact configuration for auxiliary and control circuits.
- Wide 250–500 V AC/DC control voltage range.
- Push-in Spring terminals support fast and dependable wiring.
- Integrated surge suppression reduces the need for additional coil protection components.
- Railway-oriented construction supports demanding onboard electrical applications.
Key Features
- ABB NFB railway contactor relay series.
- 4-pole configuration with 4 NO contacts.
- 250–500 V AC 50/60 Hz control voltage.
- 250–500 V DC control voltage.
- Mechanically linked auxiliary contacts.
- Electronic coil interface with built-in surge suppression.
- Push-in Spring terminals for efficient control-panel wiring.
- Designed for railway rolling-stock control applications.
Reliable Control Circuit Switching for Railway Applications
Contactor relays such as the ABB NFB40EK-14 are used to switch auxiliary and control circuits within railway electrical systems. Its four normally open contacts provide multiple switching paths for signalling, interlocking and automation functions, allowing the relay to perform several control operations within a compact device footprint.
The ABB NFB range is engineered specifically for rolling-stock environments. Its electronic wide-range coil, built-in surge suppression and Push-in Spring connection technology support efficient installation and reliable operation, while railway-oriented construction makes the range suitable for demanding onboard control systems.
Typical Applications
- Railway rolling stock control systems.
- Train auxiliary control circuits.
- Rail vehicle signalling circuits.
- Railway electrical control cabinets.
- Interlocking and automation circuits.
- Onboard electrical equipment and control systems.
Technical Specifications
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| Terminal Type | Push-in | |
|---|---|---|
| Coil Type | AC, AC/DC, DC | |
| Coil Voltage Range | 200–250 V, 380–440 V, 460–500 V | |
| Poles | 4-pole | |
| Device Type | Contactor relay | |
| Auxiliary Contacts | 4NO | |
| Manufacturer | ABB | |
| Series | NFB | |
| Model | NFB40EK-14 | |
| Order code | 1SBH137063R1440 | |
| Product type | Contactor relay | |
| Number of poles | 4 | |
| Auxiliary contacts | 4 NO + 0 NC | |
| Control voltage, AC | 250–500 V AC, 50/60 Hz | |
| Control voltage, DC | 250–500 V DC | |
| Terminal type | Push-in Spring terminals | |
| Shock and vibration standard | IEC 61373 Category 1, Class B | |
| Fire and smoke standard | EN 45545-2, HL2 |
Frequently Asked Questions
What is the ABB NFB40EK-14 used for?
The NFB40EK-14 is a contactor relay designed for switching auxiliary and control circuits in railway rolling stock and other demanding control applications.
How many contacts does the ABB NFB40EK-14 have?
The NFB40EK-14 is a four-pole contactor relay with 4 normally open contacts.
What control voltage does the NFB40EK-14 require?
The NFB40EK-14 operates across a wide 250–500 V AC 50/60 Hz and 250–500 V DC control voltage range.
What type of terminals does the ABB NFB40EK-14 use?
The NFB40EK-14 uses Push-in Spring terminals for fast and reliable control-circuit connections.
Is the NFB40EK-14 suitable for railway applications?
Yes. The NFB40EK-14 is designed for railway rolling stock, with shock and vibration performance according to IEC 61373 Category 1, Class B and fire and smoke performance according to EN 45545-2 HL2.
Trusted ABB Railway Control Technology
ABB NFB contactor relays combine wide-range electronic coil technology, railway-oriented construction and efficient Push-in Spring connections for dependable auxiliary and control-circuit switching in modern rolling stock.
