ABB - Electrification NFB44ERT-14 - NFB..RT contactor relays comply with the latest railway rolling stock standards and allow installation in passengers or driver cabins for trains frequently operating tunnels or undergrounds. They are used for switching auxiliary and control circuits. Improve the compactness of the installations thanks to reduced dimension and side-by-side mounting requiring less 15% width (without spacing) from -40 °C up to +70 °C. Meet all main rollling stocks standards: IEC 60947-4-1, IEC 60947-5-1, IEC 60077-1/-2 and applicable parts of EN 50155 standards, shocks and vibration withstand conforming to IEC 61373 cat. 1, class B. Reach the highest levels in fire and smoke behaviour with compliance to European standard EN 45545-2 (HL2, HL3 hazard levels) in group mounting Reduce train energy with lighter devices and requiring 68% less coil energy consumption in operation. Electronic coil interface accepting sinusoïdal AC 50/60 Hz control supplies included inside Ucmin.... Ucmax voltage range. Max permitted AC 50/60 Hz control voltage must not be exceeded (see technical data). Wide range of auxiliary contact blocks for front and side mounting.
ABB - Electrification

NFB44ERT-14

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Overview

The ABB NFB44ERT-14 contactor relay (SKU: NFB44ERT-14) from ABB Electrification is a compact, high-reliability switching device designed for auxiliary and control circuits in railway rolling stock. This relay meets the latest railway standards, including IEC 60947-4-1, IEC 60947-5-1, IEC 60077-1/-2, and applicable parts of EN 50155, ensuring compatibility with modern train systems operating in tunnels or underground environments. Key features include a space-saving design that reduces installation width by up to 15% when mounted side-by-side without spacing, optimizing panel space in passenger or driver cabins. The NFB44ERT-14 operates reliably across an extended temperature range of -40 °C to +70 °C, making it suitable for harsh operating conditions. It meets IEC 61373 category 1, class B for shock and vibration resistance, ensuring durability in demanding railway applications. Fire and smoke behavior compliance with EN 45545-2 (HL2, HL3 hazard levels) in group mounting enhances safety in high-density installations. The relay’s electronic coil interface accepts sinusoidal AC 50/60 Hz control supplies within a voltage range of Ucmin to Ucmax (250V to 500V as per auxiliary contact blocks). It requires 68% less coil energy during operation compared to conventional devices, contributing to energy efficiency in train systems. The NFB44ERT-14 supports a wide range of auxiliary contact blocks for front and side mounting, including configurations like 2NO+2NC (AF140-40-22B-14) or 1NO+1NC (AF305-40-11-14). Screw terminals with cable clamps accommodate rigid solid/stranded wire (1 to 2.5 mm²) and flexible wire (0.75 to 2.5 mm²). Electrical ratings include a rated insulation voltage of 690V (IEC 60947-5-1) and 600V (UL/CSA), with a rated impulse withstand voltage of 6kV. Mechanical durability is rated for 20 million operating cycles, and the maximum switching frequency is 6000 cycles/hour. Ideal for applications in passenger trains, metro systems, and underground rail networks, the NFB44ERT-14 ensures reliable switching performance while meeting stringent railway safety and environmental standards.
  • Complies with IEC 60947-4-1, IEC 60947-5-1, IEC 60077-1/-2, and EN 50155 railway standards
  • Reduces installation width by up to 15% with side-by-side mounting (no spacing required)
  • Operates reliably from -40°C to +70°C with IEC 61373 cat. 1, class B shock/vibration resistance
  • EN 45545-2 compliant (HL2, HL3 hazard levels) for fire and smoke behavior in group mounting
  • Supports auxiliary contact blocks (e.g., 2NO+2NC AF140-40-22B-14) with 250V–500V control voltage range

Specifications

Application
Mainly used for controlling 3-phase motors and generally for controlling power circuits up to 690 V AC and 220 V DC. The contactors can also be used for many other applications such as bypass, capacitor switching, lighting, DC power circuits.
Connection Type
Screw Terminals with cable clamps
Frequency
50/60 Hz
Mounting Type
Side-by-side mounting
Mounting Type
Front and side mounting
Rated Control Circuit Voltage
50 Hz /60 Hz DC Operation 250 ... 500 V
Series
NFB..RT
Series
NFB
Size
82x110x108mm
Special Features
NFB..RT contactor relays comply with the latest railway rolling stock standards and allow installation in passengers or driver cabins for trains frequently operating tunnels or undergrounds. They are used for switching auxiliary and control circuits. Improve the compactness of the installations thanks to reduced dimension and side-by-side mounting requiring less 15% width (without spacing) from -40 °C up to +70 °C. Meet all main rollling stocks standards: IEC 60947-4-1, IEC 60947-5-1, IEC 60077-1/-2 and applicable parts of EN 50155 standards, shocks and vibration withstand conforming to IEC 61373 cat. 1, class B. Reach the highest levels in fire and smoke behaviour with compliance to European standard EN 45545-2 (HL2, HL3 hazard levels) in group mounting Reduce train energy with lighter devices and requiring 68% less coil energy consumption in operation. Electronic coil interface accepting sinusoïdal AC 50/60 Hz control supplies included inside Ucmin.... Ucmax voltage range. Max permitted AC 50/60 Hz control voltage must not be exceeded (see technical data). Wide range of auxiliary contact blocks for front and side mounting.
Standard
RoHs, CSA, cUL, CE, GOST
Terminal Type
Ring-Tongue Terminals
Type
Contactors
Voltage Rating
Ucmin...Ucmax (AC 50/60 Hz)
Package Dimensions (L x W x H)
4.449 IN x 3.425 IN x 1.85 IN
Package Dimensions (L x W x H)
11.3005 cm x 8.6995 cm x 4.699 cm
Package Weight (Imperial)
1.000 L
Package Weight (Metric)
0.454 kg
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Frequently Asked Questions about ABB - Electrification

What industries and applications are Jokab Safety products used for?

Jokab Safety products are specifically designed for machine safety applications across multiple critical industrial sectors, including Food and Beverage, Packaging, and Material Handling industries. Their safety solutions cover a wide range of machine safeguarding needs, such as safety light guards, safety controllers, safety relays, safety edges, safety mats, and two-hand control devices that protect personnel and equipment in complex industrial automation environments.

What technical support does Jokab Safety offer?

Jokab Safety offers comprehensive technical support through multiple channels, including a dedicated technical support phone line at (888) 385-1221 (Option 1) and email support at [email protected]. For advanced technical assistance, customers can contact their specialized Jokab Tech Support at (519) 982-0976 or email [email protected]. Additionally, they provide product specialist support through Jeff Leslie, who can be reached at (519) 982-0976, offering in-depth application and technical guidance.

What are the main product lines offered by Jokab Safety?

Jokab Safety offers a comprehensive range of machine safety products including safety light guards (Orion), safety controllers (Pluto), safety relays (Sentry), safety edges, safety contact mats, safety locks (Gkey), and safety sensors with OSSD and DYNlink interfaces. Their product lines are specifically designed for industrial applications in food and beverage, packaging, and material handling industries, providing robust safety solutions for machine guarding and personnel protection.

What are the key features of Jokab Safety products?

Jokab Safety products offer comprehensive industrial safety solutions with key features including: highest safety certification levels (up to PL e/Cat 4), extensive fault detection, multiple safety device types (optical safety devices, pressure sensitive devices, sensors, switches, locks, emergency stops), and innovative DYNlink technology that reduces cable requirements and simplifies installation. Their products are certified, verified, and compatible with major industrial automation systems like B&R, featuring easy M12 connector connections and a wide range of adapters to streamline safety implementation.

What certifications and standards do ABB - Electrification products comply with?

ABB - Electrification products comply with a comprehensive range of international certifications and standards, including UL (United States), CSA (Canada), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia & New Zealand). Our products meet critical international standards such as IEC 60947 series for low-voltage switchgear, functional safety standards EN 61800-5-2 and ISO 13849-1, and marine classification standards from Bureau Veritas, DNV, and Lloyd's Register of Shipping.

What industries and applications are ABB - Electrification products used for?

ABB - Electrification products are engineered for critical applications across multiple industries, including Energy, Oil & Gas, Manufacturing, Power Generation, HVAC, Marine, Food & Beverage, Mining, Pulp & Paper, Water Treatment, and Automotive. Their solutions cover essential electrical infrastructure needs such as switchgear, power distribution systems, circuit protection, digital control technologies, and drive systems designed for high-reliability environments with a strong focus on sustainability, efficiency, and safety.

What technical support does ABB - Electrification offer?

ABB - Electrification offers comprehensive technical support through multiple channels, including a dedicated technical support hotline at 888-385-1221 (Option 1), available 7:00 a.m. - 5:00 p.m. CST, Monday-Friday. Their support services encompass 24/7/365 emergency services, on-site support, remote monitoring and diagnostics, installation and commissioning, equipment assessments, repair coordination, and multi-vendor technical assistance. Customers can also access resources like personnel safety training, disaster recovery support, and service agreements tailored to their specific electrification needs.

What are the main product lines offered by ABB - Electrification?

ABB - Electrification offers a comprehensive range of electrical distribution and protection products, including circuit monitoring systems, panelboards, switchgear, motor control centers, circuit breakers, softstarters, and power distribution solutions. Key product lines span low and medium voltage applications across utilities, commercial, industrial, healthcare, and manufacturing sectors, with specialized offerings like the ReliaGear® panelboards, SMISSLINE TP bus systems, and Ekip UP protection and metering relays.

What are the key features of ABB - Electrification products?

ABB - Electrification products feature advanced integrated design elements that enhance industrial performance and reliability. Key features include harmonics and EMC design, integrated DC choke, removable terminals for fast installation, USB ports for troubleshooting, and integrated Safe Torque Off (STO) functionality. The products deliver superior motor control capabilities, support both induction and permanent magnet motors, and offer robust operational features like side-by-side mounting without derating and operation at temperatures up to 45°C. Additionally, ABB's Electrification solutions emphasize digital innovation, with technologies like Novolink enabling predictive maintenance, enhanced analytics, and seamless system integration.

What communication protocols do ABB - Electrification products support?

ABB - Electrification products support a comprehensive range of industrial communication protocols, including Modbus RTU, PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, DeviceNet, and IEC 61850. These protocols enable flexible connectivity across multiple industrial automation platforms, with support for various network topologies and high-speed data transmission up to 100 Mbps.