ABB 1SBH136060R2244 NFZB44ERT-22 is an 8-pole railway contactor relay with 4 N.O. and 4 N.C. auxiliary contacts and a 48–130 V AC 50/60 Hz or DC control voltage range for rolling-stock control circuits.
£159.09
The ABB 1SBH136060R2244, also known as the NFZB44ERT-22, is a compact 8-pole railway contactor relay designed for switching auxiliary and control circuits in demanding rolling-stock and industrial applications. As part of the specialised ABB NFZB..RT railway contactor relay series, it is engineered to meet stringent railway requirements for vibration, shock, temperature, fire and smoke performance.
The NFZB44ERT-22 provides 4 normally open (N.O.) and 4 normally closed (N.C.) auxiliary contacts, allowing multiple control, signalling, sequencing and interlocking functions to be handled by a single compact device. Its electronically controlled coil accommodates a wide control-voltage range and is designed to reduce energy consumption during operation while maintaining reliable switching under demanding electrical conditions.
With a rated control circuit voltage range of 48–130 V AC 50/60 Hz or DC, a 690 V rated operational voltage for the auxiliary circuit and reliable operation from -40 to +70 °C, the NFZB44ERT-22 is particularly suitable for railway rolling stock. Ring-tongue terminal connections provide secure wiring in environments subject to shock and vibration.
Contactor relays such as the ABB NFZB44ERT-22 allow a control signal to switch multiple auxiliary circuits simultaneously. Its four normally open and four normally closed contacts make it suitable for signalling, electrical interlocking, sequencing and control functions throughout railway rolling stock and other demanding electrical systems.
The NFZB..RT range is specifically engineered for railway environments, including passenger and driver cabins on trains frequently operating in tunnels and underground systems. Its compact construction, wide-range electronic coil, secure ring-tongue connections and resistance to shock and vibration provide reliable operation where conventional industrial control equipment may face more demanding environmental conditions.
| Manufacturer | ABB |
|---|---|
| Series | NFZB..RT |
| Model | NFZB44ERT-22 |
| Product ID | 1SBH136060R2244 |
| Product type | Railway contactor relay |
| Number of auxiliary contacts | 8 |
| Normally open contacts | 4 N.O. |
| Normally closed contacts | 4 N.C. |
| Rated control circuit voltage | 48–130 V AC 50/60 Hz / DC |
| Rated operational voltage | 690 V |
| Rated insulation voltage | 690 V |
| Rated impulse withstand voltage | 6 kV |
| Conventional free-air thermal current | 16 A |
| Rated operational current AC-15 at 24–127 V | 6 A |
| Rated operational current AC-15 at 220–240 V | 4 A |
| Rated operational current AC-15 at 500 V | 2 A |
| Rated operational current AC-15 at 690 V | 2 A |
| Rated operational current DC-13 at 24 V | 6 A / 144 W |
| Rated operational current DC-13 at 110 V | 0.55 A / 60 W |
| Maximum electrical switching frequency AC-15 | 1200 cycles/hour |
| Maximum electrical switching frequency DC-13 | 900 cycles/hour |
| Maximum mechanical switching frequency | 6000 cycles/hour |
| Operating temperature | -40 to +70 °C |
| Maximum operating altitude | 3000 m |
| Terminal type | Ring-tongue terminals |
| Mounting | 35 mm DIN rail / panel mounting |
| Dimensions | approx. 86 × 45 × 86 mm |
| Weight | approx. 0.37 kg |
| Standards | IEC 60947-4-1, IEC 60947-5-1, IEC 60077-1/-2, EN 50155, IEC 61373 |
The ABB 1SBH136060R2244 NFZB44ERT-22 is a railway contactor relay designed for switching auxiliary and control circuits in rolling stock, including passenger and driver cabin electrical systems.
The NFZB44ERT-22 has 8 auxiliary contacts, comprising 4 normally open and 4 normally closed contacts.
The contactor relay has a wide rated control circuit voltage range of 48–130 V AC at 50/60 Hz or DC.
Yes. The NFZB44ERT-22 is specifically designed for railway rolling-stock applications and meets relevant requirements covering railway electrical equipment, shock, vibration, fire and smoke performance.
The NFZB44ERT-22 uses ring-tongue terminals with non-detachable screws and conical washers, providing secure cable connections suitable for railway environments subject to vibration.
ABB NFZB..RT contactor relays are engineered for dependable auxiliary switching in railway rolling stock, combining compact dimensions, wide-range electronic coil technology, robust ring-tongue connections and compliance with demanding railway environmental requirements.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...