Littelfuse HCB-2/10/Q - 120/240V 10A 2P CIRCUIT BREAKER, LUGS/QUICK CONNECT
Littelfuse

HCB-2/10/Q

Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 25

Multiplier: 25

*Contact for lower quantities*

Overview

The **Littelfuse HCB-2/10/Q** is a high-performance **120/240V 10A 2-pole circuit breaker** engineered for robust overcurrent protection in demanding industrial and commercial environments. Designed with **lug and quick-connect terminals**, this breaker ensures seamless integration into control panels, machinery, and power distribution systems, offering both flexibility and reliability. Part of the **HCB Series**, it delivers precise thermal-magnetic tripping to safeguard critical electrical infrastructure against overloads, short circuits, and faults while maintaining operational efficiency. **Key Features and Benefits:** - **Dual Connection Options:** The **lug and quick-connect terminals** simplify installation, allowing for both traditional wiring and modular plug-in configurations. This versatility reduces downtime during maintenance or upgrades, making it ideal for fast-paced industrial settings where efficiency is paramount. - **High Voltage Rating (120/240V):** Compatible with both single-phase and split-phase systems, the HCB-2/10/Q ensures broad applicability across residential, commercial, and light industrial applications. Its **2-pole design** provides balanced protection for circuits requiring simultaneous disconnection of both hot legs. - **10A Current Rating:** Precisely rated for **10 amperes**, this breaker is optimized for protecting sensitive equipment such as motors, transformers, lighting systems, and control circuits. Its thermal-magnetic trip mechanism responds rapidly to overcurrent conditions, preventing damage to downstream components. - **Industry-Approved Safety Standards:** Manufactured by **Littelfuse**, a global leader in circuit protection, the HCB-2/10/Q meets rigorous **UL 489** and **CSA C22.2 No. 5** standards for molded-case circuit breakers. This certification ensures compliance with North American electrical codes, giving engineers and contractors confidence in its performance and reliability. - **Compact and Durable Design:** Engineered for longevity, the HCB-2/10/Q features a **rugged molded-case construction** that withstands harsh environmental conditions, including vibration, dust, and temperature fluctuations. Its **space-saving form factor** allows for high-density panel mounting, maximizing available space in crowded control enclosures. **Typical Applications:** The **Littelfuse HCB-2/10/Q** is a versatile solution for a wide range of industrial and commercial applications, including: - **Machine Control Panels:** Protects motors, drives, and automation systems in manufacturing plants, CNC machines, and robotic assembly lines. - **Power Distribution Systems:** Safeguards branch circuits in commercial buildings, data centers, and telecom facilities where reliable power continuity is critical. - **Lighting Circuits:** Ideal for protecting LED, fluorescent, or HID lighting systems in warehouses, parking lots, and retail spaces. - **HVAC Systems:** Ensures safe operation of heating, ventilation, and air conditioning units in large facilities. - **Renewable Energy Systems:** Suitable for solar inverters, wind turbine controllers, and battery storage systems where precise overcurrent protection is essential. **Why Choose Littelfuse?** With over **100 years of innovation** in circuit protection, Littelfuse is a trusted partner for engineers, contractors, and facility managers worldwide. The **HCB Series** is backed by a global distribution network, comprehensive technical support, and a commitment to quality that reduces unplanned downtime. Whether you’re designing a new system or retrofitting an existing one, the **HCB-2/10/Q** delivers the performance, safety, and ease of installation required for modern electrical infrastructure. **Installation and Maintenance Tips:** - **Proper Sizing:** Always match the breaker’s **10A rating** to the load requirements of the protected circuit to avoid nuisance tripping or inadequate protection. - **Terminal Torque:** Follow manufacturer guidelines for tightening lug terminals to prevent loose connections, which can lead to overheating or arcing. - **Environmental Considerations:** Install the breaker in a **clean, dry location** with adequate ventilation to prolong its lifespan. Avoid areas prone to excessive moisture or corrosive atmospheres unless using a NEMA-rated enclosure. - **Regular Inspections:** Periodically check for signs of wear, discoloration, or damage to the breaker or wiring. Replace immediately if any abnormalities are detected. For industrial-grade circuit protection that combines **Littelfuse’s engineering excellence** with **versatile installation options**, the **HCB-2/10/Q** is the smart choice for professionals who demand reliability without compromise.
  • 120/240V voltage rating for versatile single-phase/split-phase use
  • 10A current rating with thermal-magnetic tripping for precise protection
  • Dual lug and quick-connect terminals for flexible installation
  • UL 489 and CSA C22.2 No. 5 certified for safety compliance
  • Compact, durable design for harsh industrial environments

Specifications

Connection Type
Lugs/Quick Connect
Current Rating
10 A
Poles
2P
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.