Littelfuse HCB-2/50/L - 120/240V 50A 2P CIRCUIT BREAKER, LUGS
Littelfuse

HCB-2/50/L

Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 25

Multiplier: 25

*Contact for lower quantities*

Overview

The **Littelfuse HCB-2/50/L** is a high-performance **120/240V 50A 2-pole circuit breaker with lugs**, engineered for industrial, commercial, and heavy-duty applications where reliable electrical protection is critical. Designed to meet the demands of modern electrical systems, this circuit breaker combines robust construction, precise trip characteristics, and secure lug connections to safeguard sensitive equipment from overloads, short circuits, and ground faults. Whether deployed in manufacturing plants, data centers, HVAC systems, or commercial buildings, the HCB-2/50/L delivers consistent performance under harsh operating conditions. **Key Features and Benefits:** - **Dual-Pole Design (2P):** The HCB-2/50/L provides simultaneous protection for both poles, making it ideal for 120/240V systems common in industrial and commercial environments. This ensures balanced load distribution and reduces the risk of phase imbalance, which can damage equipment. - **Lug-Type Connections:** Equipped with durable lugs, this circuit breaker supports secure, low-resistance terminations for copper or aluminum conductors. The lugs simplify installation in panelboards, switchgear, and motor control centers, reducing downtime and ensuring long-term reliability. - **50A Continuous Rating:** Rated for 50 amperes of continuous current, the HCB-2/50/L is suitable for protecting branch circuits, motors, transformers, and other high-current loads. Its thermal-magnetic trip mechanism provides fast response to overloads and short circuits, preventing damage to downstream equipment. - **Compatibility with Industry Standards:** The HCB-2/50/L is designed to meet stringent safety and performance standards, including UL 489 for molded-case circuit breakers and CSA certification for North American markets. This ensures compliance with electrical codes and regulations, giving professionals confidence in its reliability. - **Compact and Durable Construction:** Built with high-quality materials, the HCB-2/50/L features a rugged housing that resists corrosion, vibration, and mechanical stress. Its compact design optimizes panel space, making it a practical choice for tight installations where efficiency and reliability are paramount. **Typical Applications:** The Littelfuse HCB-2/50/L is widely used in a variety of industrial and commercial settings, including: - **Manufacturing Facilities:** Protecting machinery, conveyor systems, and robotic equipment from electrical faults. - **HVAC Systems:** Safeguarding compressors, fans, and control panels in commercial and industrial HVAC installations. - **Data Centers and Telecommunications:** Providing reliable power distribution for servers, networking equipment, and backup systems. - **Commercial Buildings:** Serving as a main or branch circuit breaker in panelboards, switchgear, and distribution boards. - **Renewable Energy Systems:** Protecting inverters, battery storage systems, and solar/wind power distribution panels. **Why Choose Littelfuse?** Littelfuse is a global leader in circuit protection, with over a century of innovation and expertise in electrical safety. The company’s products are trusted by professionals in industries ranging from aerospace to healthcare, thanks to their unwavering commitment to quality, performance, and compliance. The HCB-2/50/L exemplifies this legacy, offering a combination of precision engineering, durability, and ease of installation that reduces maintenance costs and enhances system uptime. Whether you’re upgrading an existing electrical system or designing a new one, the Littelfuse HCB-2/50/L provides the protection and reliability your operations demand. **Installation and Maintenance Considerations:** Proper installation of the HCB-2/50/L is critical to ensuring optimal performance. Professionals should follow manufacturer guidelines and local electrical codes when mounting the breaker in a panelboard or switchgear. The lugs should be tightened to the specified torque to prevent loose connections, which can lead to overheating or arcing. Regular inspections and testing, such as thermal imaging and insulation resistance checks, can help identify potential issues before they escalate. Littelfuse provides comprehensive documentation and support to assist with installation, troubleshooting, and maintenance, ensuring long-term reliability. For engineers, electricians, and facility managers seeking a dependable 2-pole circuit breaker with lugs, the **Littelfuse HCB-2/50/L** stands out as a top-tier solution. Its combination of high performance, durability, and compliance with industry standards makes it an excellent choice for protecting critical electrical infrastructure in virtually any application.
  • 120/240V 50A 2-pole design for balanced load protection
  • Lug-type connections for secure, low-resistance terminations
  • Thermal-magnetic trip mechanism for fast overload/short circuit response
  • UL 489 and CSA certified for North American compliance
  • Compact, durable construction for harsh industrial environments

Specifications

Connection Type
Lugs
Current Rating
50 A
Poles
2P
Series
HCB
Voltage Rating
120/240 V
Ground Lug

DNGL

Ground Lug
COVER,SET,AP-400,MC-265a~400a

64611614007

COVER,SET,AP-400,MC-265a~400a
INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

83411621001

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

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.