Littelfuse HCB-1/25/L - 120/240V 25A 1P CIRCUIT BREAKER, LUGS
Littelfuse

HCB-1/25/L

Documents & Media
Specification Sheet

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Minimum Qty: 50

Multiplier: 50

*Contact for lower quantities*

Overview

The **Littelfuse HCB-1/25/L 120/240V 25A 1-Pole Circuit Breaker with Lugs** delivers robust overcurrent protection for critical industrial and commercial electrical systems. Engineered by Littelfuse, a global leader in circuit protection solutions, this compact yet high-performance breaker is designed to safeguard equipment, prevent downtime, and ensure operational safety in demanding environments. With a rated voltage of 120/240V AC and a current rating of 25A, the HCB-1/25/L is ideal for branch circuit protection in control panels, motor circuits, lighting systems, and power distribution networks. Its **lug-style terminations** provide secure, low-resistance connections, minimizing the risk of loose wiring or overheating—a common failure point in electrical systems. **Key Features and Benefits:** - **High-Quality Construction:** Built to meet rigorous UL and IEC safety standards, the HCB-1/25/L ensures compliance with global electrical codes, including NEC (National Electrical Code) requirements for industrial applications. Its durable molded case and thermal-magnetic tripping mechanism deliver consistent performance under repeated fault conditions. - **Versatile Voltage Rating:** Supporting both 120V and 240V systems, this single-pole breaker is adaptable to a wide range of applications, from lighting circuits to HVAC systems. Its dual-voltage capability reduces inventory needs, streamlining procurement and maintenance for facilities managers. - **Secure Lug Connections:** The integrated lug terminals accommodate copper or aluminum conductors, providing a stable, vibration-resistant connection that resists loosening over time. This design reduces maintenance costs and enhances system reliability, particularly in high-vibration environments like manufacturing plants or data centers. - **Compact and Modular:** With a space-saving form factor, the HCB-1/25/L integrates seamlessly into panelboards, switchgear, and motor control centers. Its modular design allows for easy replacement or upgrading of existing breakers without extensive reconfiguration. - **Fast Response to Overcurrents:** The thermal-magnetic trip unit ensures immediate interruption of fault currents, protecting sensitive equipment from damage caused by short circuits or overloads. This rapid response is critical in applications where equipment failure could lead to costly production delays or safety hazards. **Typical Applications:** The HCB-1/25/L is widely used in **industrial automation, commercial buildings, and utility infrastructure**, where reliable circuit protection is non-negotiable. Common applications include: - **Motor circuits** (e.g., pumps, fans, conveyors) requiring overload and short-circuit protection. - **Lighting distribution panels** in warehouses, offices, and retail spaces. - **HVAC systems** to safeguard compressors, air handlers, and control circuits. - **Power distribution units (PDUs)** in data centers and telecom facilities. - **Machine tool controls** in manufacturing environments, where precision and uptime are critical. **Why Choose Littelfuse?** Littelfuse has been a trusted name in circuit protection for over a century, with a reputation for innovation and reliability. The HCB-1/25/L exemplifies this legacy, offering: - **Proven performance** in harsh industrial conditions, backed by decades of field experience. - **Global compliance** with standards such as UL 489, CSA C22.2 No. 5, and IEC 60947-2, ensuring seamless integration into international projects. - **Technical support and resources** from Littelfuse’s team of experts, including application engineering assistance and training programs. - **Sustainable design** with RoHS-compliant materials, aligning with modern environmental and safety regulations. **Installation and Maintenance Considerations:** Professionals should follow **NEC Article 240** guidelines when installing the HCB-1/25/L, ensuring proper sizing, conductor compatibility, and clear labeling. The breaker’s lug terminals accept wire sizes from **#14 AWG to #4 AWG**, making it compatible with a broad range of conductors. For optimal performance, inspect connections periodically for signs of corrosion or overheating, and replace the breaker if tripping occurs frequently without an apparent cause. Littelfuse provides comprehensive documentation, including datasheets and installation manuals, to simplify the process. **Conclusion:** For engineers, electricians, and facility managers seeking a **reliable, code-compliant 25A circuit breaker**, the Littelfuse HCB-1/25/L is a top-tier choice. Its combination of durability, versatility, and manufacturer-backed quality ensures long-term protection for your electrical infrastructure. Whether you’re upgrading an existing system or designing a new installation, this breaker delivers the performance and peace of mind you need to keep operations running smoothly.
  • 120/240V AC voltage rating for versatile applications
  • 25A current rating with thermal-magnetic tripping for overcurrent protection
  • Lug-style terminations for secure, low-resistance connections
  • UL 489 and IEC 60947-2 compliant for global safety standards
  • Compact, modular design for easy panelboard integration

Specifications

Connection Type
Lugs
Current Rating
25 A
Poles
1P
Series
HCB
Voltage Rating
120/240 V
One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

LCMA6-8-C

One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.
JB5-2 2 POLE JUMPER 5.2MM SPACING

1SNK905302R0000

JB5-2 2 POLE JUMPER 5.2MM SPACING
JB5-5 5 POLE JUMPER 5.2MM SPACING

1SNK905305R0000

JB5-5 5 POLE JUMPER 5.2MM SPACING
Ground Lug

DNGL

Ground Lug
ZCT,LZR-030(V),EMPR,EXP

76512124011

ZCT,LZR-030(V),EMPR,EXP
INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

83411621001

INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

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.