Littelfuse ELCT500-210 - The ELCT500 Series is a core‑balance current transformer designed for use with Littelfuse EL500 ground‑fault protection relays to accurately measure low‑level leakage and ground‑fault currents. Engineered with a 1500:1 turns ratio and 1 kV insulation rating, it delivers reliable performance across a range of window sizes for diverse installation requirements. CE‑certified and built for precision, the ELCT500 Series enables dependable fault detection in industrial and commercial protection systems.
Littelfuse

ELCT500-210

UPC: 079458381689

Contact for Pricing

Overview

The Littelfuse ELCT500 Series core-balance current transformer is engineered for precise low-level leakage and ground-fault current measurement in industrial and commercial protection systems. Designed for use with Littelfuse EL500 ground-fault protection relays, this CT delivers accurate detection of earth-leakage currents with a 1500:1 turns ratio and 1 kV insulation rating. The ELCT500 Series supports multiple window sizes (31mm and 88mm ID) to accommodate diverse conductor configurations, with weights ranging from 127g to 680g depending on model. Certified to UL, cUL, CE, and RoHS standards, it complies with IEC 61869-2 and ANSI/IEEE C57.13, ensuring reliable performance across 50-400 Hz frequencies. Operating from -40°C to 55°C, the ELCT500 Series is ideal for sensitive applications requiring high accuracy at low burden levels. Wire gauge compatibility spans 0.05-3.3 mm² (12-30 AWG), with a tightening torque of 0.5 N-m. Choose between ELCT5 (5:0.05 A) or ELCT30 (30:0.05 A) models based on your current rating needs, with accuracy maintained at 3% for specified burden values. The ELCT500 Series is the dependable choice for ground-fault protection in systems where precision and compliance are non-negotiable.
  • 1500:1 turns ratio for precise low-level current measurement
  • 1 kV insulation rating with CE, UL, cUL certification
  • Supports 31mm and 88mm window sizes for flexible conductor routing
  • Operates from -40°C to 55°C with 50-400 Hz frequency range
  • Compatible with 0.05-3.3 mm² wire gauge and 0.5 N-m tightening torque

Specifications

Series
ELCT500
Voltage Rating
1 kV
RTXD Extractor Tool

6896057-1

RTXD Extractor Tool
Relay Accessories, Sockets & Clips, Printed Circuit Board, Phenolic, Printed Circuit Board, 6, Socket, Potter & Brumfield R10

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1-1393143-6

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Power supply for DIN-rail

PS-60

Power supply for DIN-rail
IP67 SCP-X Extreme Environment Series Power Supply. Double Stacked, Output Power 2 x 100W, Output Voltage 24 Vdc, Output Current 7.6 A total, 3.8 A per pair

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Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.