Littelfuse HCB-3/10/Q - 120/240V 10A 3P CIRCUIT BREAKER, LUGS/QUICK CONNECT
Littelfuse

HCB-3/10/Q

Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 20

Multiplier: 20

*Contact for lower quantities*

Overview

The **Littelfuse HCB-3/10/Q** is a high-performance 3-pole circuit breaker engineered for industrial and commercial electrical systems requiring reliable overcurrent protection. Rated for **120/240V** and **10A**, this breaker delivers precise fault detection and interruption to safeguard sensitive equipment, control panels, and machinery from damaging electrical faults. Designed with **lug and quick-connect terminals**, the HCB-3/10/Q ensures versatile installation compatibility, accommodating both traditional wiring methods and modern plug-and-play configurations. Its robust construction meets stringent safety standards, providing long-term durability in demanding environments where operational continuity is critical. **Key Features and Benefits:** - **Dual-Terminal Design:** The inclusion of both **lug and quick-connect terminals** allows for flexible wiring options, reducing installation time and simplifying retrofits in existing systems. This feature is particularly valuable in control panels where space constraints or wiring preferences may vary. - **High Interrupt Rating:** Engineered for **120/240V systems**, the HCB-3/10/Q effectively interrupts fault currents to prevent equipment damage, downtime, and safety hazards. Its performance aligns with industrial-grade requirements for consistent protection. - **3-Pole Configuration:** The 3-pole design ensures balanced protection across all phases, making it ideal for applications such as motors, HVAC systems, and industrial machinery where phase imbalance can lead to inefficiencies or failures. - **Compact and Durable:** Built with high-quality materials, this circuit breaker withstands harsh conditions, including vibration, temperature fluctuations, and electrical stress, ensuring reliable operation over its lifecycle. - **Compliance and Safety:** Littelfuse’s reputation for engineering excellence ensures that the HCB-3/10/Q meets or exceeds industry standards, including UL and IEC certifications, providing peace of mind for engineers and facility managers. **Typical Applications:** The **HCB-3/10/Q** is widely used in industrial and commercial settings where precise overcurrent protection is essential. Common applications include: - **Control Panels:** Protecting branch circuits in motor control centers (MCCs), PLC panels, and automation systems. - **Machinery and Equipment:** Safeguarding industrial machines, CNC equipment, and robotic systems from electrical faults. - **HVAC Systems:** Ensuring reliable protection for heating, ventilation, and air conditioning units in commercial buildings. - **Lighting Circuits:** Providing overcurrent protection for large-scale lighting installations in warehouses, factories, and retail spaces. - **Renewable Energy Systems:** Supporting solar and wind power installations where stable, fault-tolerant protection is required. **Installation and Selection Considerations:** When selecting a circuit breaker like the **Littelfuse HCB-3/10/Q**, professionals prioritize factors such as voltage rating, current rating, interrupting capacity, and terminal compatibility. The HCB-3/10/Q excels in these areas, offering a **10A rating** suitable for medium-duty applications while maintaining compatibility with **120/240V systems**. Its **3-pole design** ensures balanced protection, and the **dual-terminal option** simplifies integration into new or existing systems. For optimal performance, installers should follow manufacturer guidelines for mounting, wiring, and thermal considerations to maximize safety and longevity. **Why Choose Littelfuse?** Littelfuse is a global leader in circuit protection, with over a century of innovation in electrical safety solutions. The company’s products are trusted by engineers and facility managers worldwide for their reliability, precision, and adherence to industry standards. The **HCB-3/10/Q** exemplifies Littelfuse’s commitment to quality, offering a robust solution for critical applications where downtime is not an option. Whether for industrial automation, commercial infrastructure, or renewable energy projects, Littelfuse circuit breakers provide the protection and performance needed to maintain operational efficiency and safety. **Ordering and Technical Support:** The **HCB-3/10/Q** is available through authorized distributors and Littelfuse’s global network. For technical specifications, installation guidance, or compliance documentation, customers can access Littelfuse’s comprehensive resources, including datasheets, CAD models, and application notes. With a focus on customer success, Littelfuse ensures that professionals have the tools and support needed to implement its solutions effectively.
  • 10A rating for medium-duty industrial applications
  • Dual lug and quick-connect terminals for flexible wiring
  • 3-pole design for balanced phase protection
  • Rated for 120/240V systems with high interrupt capacity
  • Compact, durable construction for harsh environments

Specifications

Connection Type
Lugs/Quick Connect
Current Rating
10 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.