ABB - Electrification Signature Partner Distributor
ABB - Electrification NF44EK-12 - NF..K contactor relays are used for switching auxiliary and control circuits. NF contactor relays include an electronic coil interface accepting a wide control voltage Uc min. ... Uc max. Only four coils cover control voltages between 24...500 V 50/60 Hz or 20...500 V DC. NF contactor relays can manage large control voltage variations. One coil can be used for different control voltages used worldwide without any coil change. NF contactor relays have built-in surge protection and do not require additional surge suppressors. NF..K include Push-in Spring terminals. Only one push is all you need for extremely fast wiring: faster than ever installation, easier than ever wiring, reliable as ever connections. Poles: 8-pole contactor relays with a non-removable front-mounted auxiliary contact block (mechanically-linked auxiliary contacts compliant with Annex L of IEC 60947-5-1 and including the "Mechanically Linked" symbol on the contactor relay side).
ABB - Electrification

NF44EK-12


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Specification Sheet

Contact for Pricing

Overview

The ABB NF44EK-12 is an 8-pole contactor relay designed for reliable switching of auxiliary and control circuits in industrial automation and control panel applications. This block-type relay features a non-removable, front-mounted auxiliary contact block comprising 4 NO and 4 NC contacts. These auxiliary contacts are mechanically linked, compliant with Annex L of IEC 60947-5-1, and bear the "Mechanically Linked" symbol, ensuring positive indication of contact status. The NF44EK-12 utilizes an electronic coil interface that accepts a wide control voltage range of 48-130V AC (50/60 Hz) or 48-130V DC. This broad voltage compatibility simplifies inventory management, as a single coil can cover multiple voltage requirements globally. The integrated electronic coil interface also manages large control voltage variations and includes built-in surge protection, eliminating the need for external surge suppressors and safeguarding sensitive control circuits. Wiring is significantly expedited with the inclusion of push-in spring terminals. A simple push action secures the wire, offering faster installation and more reliable connections compared to traditional screw terminals. The NF44EK-12 has 8 main poles (4 NO, 4 NC) and is designed for 35mm DIN rail mounting. Manufactured by ABB - Electrification in the US, this relay is suitable for applications such as motor control centers, HVAC systems, and industrial automation where robust and dependable auxiliary switching is critical. SKU: NF44EK-12. Order code: 1SBH137005R1244. Weight: 0.330 kg per package.
  • 8-pole contactor relay for auxiliary and control circuits
  • Includes non-removable front-mounted 4 NO / 4 NC auxiliary contact block
  • Mechanically linked auxiliary contacts compliant with IEC 60947-5-1 Annex L
  • Wide control voltage range: 48-130V AC (50/60 Hz) and 48-130V DC
  • Push-in spring terminals for fast and reliable wiring
  • Built-in surge protection
  • Manufacturer: ABB - Electrification
  • SKU: NF44EK-12

Specifications

Connection Type
Push-in Spring terminals
Connection Type
Push-in Spring
Frequency
50/60 Hz
Mounting Type
DIN rail (35mm)
Poles
8
Poles
8-pole
Poles
8 Poles
Rated Control Circuit Voltage
50 Hz /60 Hz DC Operation 48 ... 130 V
Series
NF..K
Size
138mm depth
Special Features
NF..K contactor relays are used for switching auxiliary and control circuits. NF contactor relays include an electronic coil interface accepting a wide control voltage Uc min. ... Uc max. Only four coils cover control voltages between 24...500 V 50/60 Hz or 20...500 V DC. NF contactor relays can manage large control voltage variations. One coil can be used for different control voltages used worldwide without any coil change. NF contactor relays have built-in surge protection and do not require additional surge suppressors. NF..K include Push-in Spring terminals. Only one push is all you need for extremely fast wiring: faster than ever installation, easier than ever wiring, reliable as ever connections. Poles: 8-pole contactor relays with a non-removable front-mounted auxiliary contact block (mechanically-linked auxiliary contacts compliant with Annex L of IEC 60947-5-1 and including the "Mechanically Linked" symbol on the contactor relay side).
Terminal Type
Push-in Spring Terminals
Voltage Rating
24-500 V AC/DC
Package Dimensions (L x W x H)
4.37 IN x 3.583 IN x 1.772 IN
Package Dimensions (L x W x H)
11.0998 cm x 9.1008 cm x 4.5009 cm
Package Weight (Imperial)
0.770 L
Package Weight (Metric)
0.349 kg
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Ground Lug

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CONTACT BLOCK BU BFB-20

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Frequently Asked Questions

What is the control voltage range for the NF44EK-12 contactor relay?

The electronic coil interface accepts a wide control voltage range, with four coils covering voltages between 24-60 Hz or 24V DC.

Does the NF44EK-12 relay require external surge suppressors?

No, the NF44EK-12 contactor relays have built-in surge protection and do not require additional surge suppressors.

What type of terminals does the NF44EK-12 use for wiring?

The NF44EK-12 includes Push-in Spring terminals for extremely fast and reliable connections.

What is the rated control circuit voltage for the NF44EK-12?

The rated control circuit voltage is 24-60 Hz and 24V DC operation.

What are the rated operational currents for the main circuit at different voltages?

The rated operational current for the main circuit is 12A at 230/240V, 9A at 400/433V, 6A at 500V, 4A at 600V, and 4A at 690V.

What is the maximum electrical switching frequency for AC and DC circuits?

The maximum electrical switching frequency is 3600 cycles per hour for AC and 1800 cycles per hour for DC.

What are the operating times for the NF44EK-12 relay contacts?

The operate time (coil energization to NC contact closing) is 8-10 ms, and the release time (coil de-energization to NO contact closing) is 6-8 ms.

What are the dimensions of the NF44EK-12 relay?

The product has a net depth of 86 mm, a net width of 45 mm, and a net height of 78 mm.

What is the net weight of the NF44EK-12 contactor relay?

The product net weight is 0.34 kg.

What is the ambient air temperature range for operation and storage?

For storage, the ambient air temperature should be close to the contactor. For operation in free air, it is -25 to 55°C.

Frequently Asked Questions about ABB - Electrification

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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.

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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.

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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.

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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.

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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.

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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.

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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.