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1SBH137063R1444 ABB NFB44EK-14 Contactor 250-500V AC/DC Coil
ABB NFB44EK-14 is an 8-pole railway contactor relay with 4 NO and 4 NC 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.
£109.80
Why Choose the ABB NFB44EK-14 Contactor Relay?
The ABB NFB44EK-14, order code 1SBH137063R1444, is an 8-pole contactor relay designed for reliable switching of auxiliary and control circuits in railway rolling stock. As part of the ABB NFB railway contactor relay range, it combines four normally open and four normally closed auxiliary contacts with a compact design developed for demanding onboard electrical applications.
The NFB44EK-14 features an electronic coil interface with a wide 250–500 V AC 50/60 Hz and 250–500 V DC control voltage range. Its low coil holding power helps reduce energy consumption, while built-in surge protection eliminates the need for an additional external coil surge suppressor.
With 4 NO and 4 NC auxiliary contacts, a rated operational current of 3 A at 400 V and Push-in Spring connection technology, the NFB44EK-14 provides a versatile solution for railway signalling, interlocking and automation circuits. Its compact 45 mm width and DIN rail or screw mounting options support space-efficient installation in rolling-stock control cabinets.
Key Advantages
- Compact 8-pole contactor relay designed for railway rolling stock.
- 4 NO and 4 NC contact configuration for flexible auxiliary and control circuits.
- Wide 250–500 V AC/DC control voltage range.
- Push-in Spring terminals support rapid and secure control-panel wiring.
- Low coil holding power helps reduce control-circuit energy consumption.
- Built-in surge protection eliminates the need for an additional external coil surge suppressor.
Key Features
- ABB NFB railway contactor relay series.
- 8-pole configuration with 4 NO and 4 NC contacts.
- 250–500 V AC 50/60 Hz control voltage.
- 250–500 V DC control voltage.
- 3 A rated operational current at 400 V.
- Mechanically linked auxiliary contacts.
- Electronic coil interface with built-in surge protection.
- Push-in Spring terminals for efficient control-panel wiring.
Reliable Control Circuit Switching for Railway Applications
Contactor relays such as the ABB NFB44EK-14 are designed to switch auxiliary and control circuits used throughout railway electrical systems. Its four normally open and four normally closed contacts provide multiple switching paths for signalling, interlocking and automation functions, allowing several control operations to be handled by a single compact device.
The ABB NFB range is developed for railway rolling-stock applications and combines a wide-range electronic coil with mechanically linked auxiliary contacts, built-in surge protection and Push-in Spring connection technology. These features support dependable operation while simplifying installation and wiring in onboard electrical 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 | 8-pole | |
| Device Type | Contactor relay | |
| Auxiliary Contacts | 4NO + 4NC | |
| Manufacturer | ABB | |
| Series | NFB | |
| Model | NFB44EK-14 | |
| Order code | 1SBH137063R1444 | |
| EAN / GTIN | 3471523011045 | |
| Product type | Contactor relay | |
| Number of poles | 8 | |
| Auxiliary contacts | 4 NO + 4 NC | |
| Control voltage, AC | 250–500 V AC, 50/60 Hz | |
| Control voltage, DC | 250–500 V DC | |
| Rated operational voltage, auxiliary circuit | 690 V AC | |
| Rated operational current at 400 V | 3 A | |
| Terminal type | Push-in Spring terminals | |
| Mounting type | DIN rail / screw mounting | |
| Width | 45 mm | |
| Height | 92.3 mm | |
| Depth | 110.5 mm | |
| Weight | 0.37 kg |
Frequently Asked Questions
What is the ABB NFB44EK-14 used for?
The NFB44EK-14 is a contactor relay designed for switching auxiliary and control circuits in railway rolling stock.
How many contacts does the ABB NFB44EK-14 have?
The NFB44EK-14 is an eight-pole contactor relay with 4 normally open contacts and 4 normally closed contacts.
What control voltage does the NFB44EK-14 require?
The NFB44EK-14 operates across a wide 250–500 V AC at 50/60 Hz and 250–500 V DC control voltage range.
What type of terminals does the ABB NFB44EK-14 use?
The NFB44EK-14 uses Push-in Spring terminals for rapid and secure control-circuit connections.
How is the ABB NFB44EK-14 mounted?
The NFB44EK-14 supports DIN rail or screw mounting, providing flexible installation within railway electrical control cabinets.
Trusted ABB Railway Control Technology
ABB NFB contactor relays combine wide-range electronic coil technology, mechanically linked auxiliary contacts and efficient Push-in Spring connections for dependable auxiliary and control-circuit switching in modern railway rolling stock.
