Littelfuse HCB-3/25/L - 120/240V 25A 3P CIRCUIT BREAKER, LUGS
Littelfuse

HCB-3/25/L

Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 20

Multiplier: 20

*Contact for lower quantities*

Overview

The **Littelfuse HCB-3/25/L** is a high-performance, 3-pole circuit breaker engineered for robust overcurrent protection in demanding industrial and commercial electrical systems. Rated for **120/240V** and **25A**, this circuit breaker combines Littelfuse’s industry-leading reliability with a compact, durable design optimized for harsh operating environments. Featuring **lug connections**, the HCB-3/25/L ensures secure, low-resistance wiring, reducing installation time and minimizing the risk of loose connections that can lead to system failures or safety hazards. Built to meet stringent UL and IEC standards, this circuit breaker is a trusted solution for engineers and electricians seeking dependable protection in power distribution, motor circuits, and control panel applications. **Key Features and Benefits:** - **Triple-Pole Design for Balanced Protection:** The HCB-3/25/L provides simultaneous overcurrent protection across all three poles, making it ideal for three-phase systems where unbalanced loads or faults could compromise equipment or safety. This balanced design is critical in applications such as HVAC systems, pumps, and industrial machinery where consistent power delivery is essential. - **Lug Connections for Reliable Wiring:** Unlike push-in or screw-type terminals, the lug connections on the HCB-3/25/L offer superior contact integrity and long-term stability. This design reduces the risk of arcing, overheating, and voltage drops, which are common failure points in high-current circuits. Professionals in the field trust lug-type breakers for their ability to maintain performance even in vibration-prone environments, such as construction sites or manufacturing floors. - **Compact and Versatile Form Factor:** With its space-saving design, the HCB-3/25/L fits seamlessly into tight control panels, switchgear, and distribution boards without sacrificing performance. Its modular construction allows for easy integration into existing systems or new installations, making it a versatile choice for retrofits and greenfield projects alike. - **Trusted Littelfuse Quality and Safety:** Littelfuse is a global leader in circuit protection, with a reputation for innovation and durability. The HCB-3/25/L leverages the company’s decades of expertise in designing breakers that withstand extreme conditions, from high temperatures to corrosive atmospheres. This reliability translates to fewer maintenance calls, reduced downtime, and lower total cost of ownership for end-users. - **Wide Range of Applications:** The HCB-3/25/L is purpose-built for critical applications where electrical faults could result in costly damage or safety risks. Common uses include: - **Motor circuits** in industrial machinery, where overload protection prevents damage to expensive equipment. - **Control panels** in commercial buildings, ensuring compliance with electrical codes and protecting sensitive electronics. - **HVAC systems**, where reliable operation is essential for climate control and energy efficiency. - **Renewable energy systems**, such as solar inverters or wind turbine controllers, where stable power distribution is paramount. **Why Choose the HCB-3/25/L?** Selecting the right circuit breaker is a balance of performance, safety, and compatibility. The HCB-3/25/L excels in all three areas. Its **25A rating** makes it suitable for medium-duty applications, while the **120/240V** compatibility ensures it can be deployed in both single-phase and split-phase systems. The **3-pole design** provides comprehensive protection for three-phase loads, a critical feature in industrial settings where phase imbalances can lead to equipment failure. Installation is straightforward, thanks to the **lug connections**, which simplify wiring and reduce the need for specialized tools. Electricians and engineers appreciate the breaker’s **UL 489** listing, which certifies it for use in branch circuit protection applications. Additionally, Littelfuse’s global distribution network ensures quick availability, reducing lead times for critical projects. For professionals who prioritize **safety, reliability, and longevity**, the HCB-3/25/L stands out as a top-tier choice. Whether you’re protecting a motor control center, a data center’s power distribution unit, or a commercial building’s electrical system, this circuit breaker delivers the performance and peace of mind required in today’s fast-paced industrial landscape.
  • 3-pole design for balanced three-phase protection
  • 25A rating with 120/240V compatibility
  • Lug connections for secure, low-resistance wiring
  • UL 489 listed for branch circuit protection
  • Compact design for easy panel integration

Specifications

Connection Type
Lugs
Current Rating
25 A
Poles
3P
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.