ABB - Electrification Signature Partner Distributor
ABB - Electrification NF53EK-14 - 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

NF53EK-14


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Specification Sheet

Contact for Pricing

Overview

The ABB NF53EK-14 is an 8-pole contactor relay from ABB Electrification (SKU: NF53EK-14, Order Code: 1SBH137005R1453) designed for switching auxiliary and control circuits in industrial automation, HVAC, motor control, and lighting systems. This relay features a permanently fixed 8-pole auxiliary contact block with mechanically linked contacts (compliant with IEC 60947-5-1 Annex L), ensuring reliable operation in safety-critical systems. The NF53EK-14 includes an electronic coil interface that accepts a wide control voltage range from 250V to 500V AC (50/60Hz) or 250V to 500V DC, eliminating the need for coil changes across global voltage standards. Only four coils cover all voltage ranges, reducing inventory complexity and panel space requirements. Built-in surge suppression eliminates the need for external surge suppressors, protecting downstream components from voltage spikes and extending system lifespan. The push-in spring terminals enable tool-free wiring with a single push, accelerating installation by up to 50% compared to traditional screw terminals. This feature also ensures reliable, vibration-resistant connections in harsh industrial environments. The relay weighs 0.370 kg per package and is optimized for energy efficiency, reducing panel energy consumption while maintaining distinct closing and opening operations for clear visual feedback. The NF53EK-14 is compatible with ABB’s extensive range of add-on auxiliary contact blocks and accessories, allowing for flexible configuration to meet specific application needs. With a compact DIN rail mounting design, it integrates seamlessly into control panels. Key applications include motor control, lighting systems, HVAC, and industrial automation where reliable auxiliary switching is critical. The relay’s compliance with IEC 60947-5-1 and built-in surge protection make it ideal for use in demanding environments where electrical noise and voltage fluctuations are common.
  • 8-pole auxiliary contact block with mechanically linked contacts (IEC 60947-5-1 Annex L compliant)
  • Electronic coil interface for 250-500V AC/DC control voltage range
  • Built-in surge suppression eliminates need for external suppressors
  • Push-in spring terminals for tool-free, fast, and vibration-resistant wiring
  • DIN rail mounting for compact integration into control panels

Specifications

Connection Type
Push-in Spring terminals
Frequency
50/60 Hz
Poles
8
Rated Control Circuit Voltage
50 Hz /60 Hz DC Operation 250 ... 500 V
Series
NF..K
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 50/60 Hz or 20...500 V 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)
0.860 L
Package Weight (Metric)
0.390 kg
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LCMA6-8-C

One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.
Ground Lug

DNGL

Ground Lug
CONTACT BLOCK BU BLB-02

BLB-02

CONTACT BLOCK BU BLB-02
CONTACT BLOCK BU BFB-20

BFB-20

CONTACT BLOCK BU BFB-20

Frequently Asked Questions

What is the control voltage range for the NF53EK-14 contactor relay?

The electronic coil interface accepts a wide control voltage range from 48-277V, covering 48-130V AC/DC or 130-277V AC.

Does the NF53EK-14 relay require surge suppressors?

No, the NF53EK-14 contactor relays have built-in surge protection and do not require additional surge suppressors.

What type of terminals does the NF53EK-14 relay use for wiring?

The NF53EK-14 relay features Push-in Spring terminals for extremely fast and reliable wiring connections.

How many poles does the NF53EK-14 contactor relay have?

The NF53EK-14 is a 4-pole contactor relay with a non-removable front-mounted auxiliary contact block.

What is the rated control circuit voltage for the NF53EK-14?

The rated control circuit voltage is 48-130V AC/DC and 130-277V AC.

What is the operating temperature range for the NF53EK-14 relay?

The operating ambient air temperature near the contactor for operation in free air is between -25 to 60 degrees C.

What is the maximum operating altitude for the NF53EK-14?

The maximum operating altitude permissible for the NF53EK-14 is 3000 meters.

What is the rated operational current for the NF53EK-14 at 24V AC?

The rated operational current for the NF53EK-14 at 24V AC is 10 Amps.

What is the maximum electrical switching frequency for AC with the NF53EK-14?

The maximum electrical switching frequency for AC is 1200 cycles per hour.

What is the rated insulation voltage for the NF53EK-14?

The rated insulation voltage according to IEC 60947-1 and IEC 60947-4-1 is 690V.

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.