Littelfuse SE-GRM048 - Connects the SE-601 relay to an ungrounded 24 Vdc bus.
Littelfuse

SE-GRM048

Alternate Item Number: SE-GRM048

UPC: 079458989335


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Overview

The Littelfuse SE-GRM048 is a precision-engineered connector designed to bridge SE-601 relays with ungrounded 24 Vdc industrial buses, ensuring reliable signal integrity and operational stability in demanding control environments. As a critical interface component, the SE-GRM048 facilitates seamless integration between relay modules and power distribution systems, eliminating common failure points associated with loose or incompatible connections. Engineered for industrial-grade performance, this connector is built to withstand harsh operating conditions, including temperature fluctuations, mechanical stress, and electromagnetic interference, which are typical in automation, process control, and machinery applications. Industrial professionals rely on the SE-GRM048 to maintain consistent 24 Vdc power delivery across ungrounded systems, a configuration often preferred in sensitive electronics and control panels to prevent ground loop issues and enhance system reliability. The connector’s robust construction ensures long-term durability, reducing maintenance requirements and minimizing downtime in critical operations. Whether deployed in factory automation lines, HVAC control systems, or renewable energy installations, the SE-GRM048 delivers the precision and dependability required for mission-critical applications. Selecting the right connector for relay-to-bus integration involves evaluating voltage compatibility, environmental resilience, and installation ease. The SE-GRM048 excels in all these areas, offering a compact footprint that simplifies panel layout while providing secure, vibration-resistant terminations. Its design aligns with industry standards for industrial control systems, ensuring compliance with safety and performance benchmarks set by organizations such as UL, IEC, and ISO. For engineers and procurement teams, this connector represents a cost-effective solution that reduces system complexity without compromising reliability. Littelfuse, a global leader in circuit protection and connectivity solutions, has engineered the SE-GRM048 to meet the rigorous demands of modern industrial applications. With decades of expertise in developing high-performance components, Littelfuse ensures that every SE-GRM048 connector undergoes stringent quality testing to deliver consistent performance in the field. Trusted by professionals across industries—from manufacturing and energy to transportation and infrastructure—the SE-GRM048 exemplifies Littelfuse’s commitment to innovation, safety, and operational excellence. For applications where electrical integrity and system uptime are non-negotiable, the SE-GRM048 provides the reliable connection you need.
  • Precision interface for SE-601 relays to ungrounded 24 Vdc buses
  • Industrial-grade construction for harsh environments (temperature, vibration, EMI)
  • Ensures signal integrity and prevents ground loop issues in control systems
  • Compact design simplifies panel layout and installation
  • Compliant with UL, IEC, and ISO standards for safety and performance

Specifications

Application
Industrial
Brand Name
Littelfuse
Special Features
High Quality
Sub Brand
Relay Series
Type
Protection Relays and Controls
Voltage Rating
24 VDC
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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.