Littelfuse HCB-3/30/Q - 120/240V 30A 3P CIRCUIT BREAKER, LUGS/QUICK CONNECT
Littelfuse

HCB-3/30/Q

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Specification Sheet

Contact for Pricing

Minimum Qty: 20

Multiplier: 20

*Contact for lower quantities*

Overview

The **Littelfuse HCB-3/30/Q** is a high-performance **120/240V 30A 3-pole circuit breaker** engineered for industrial and commercial electrical systems requiring robust overcurrent and short-circuit protection. Designed with **lug and quick-connect terminals**, this breaker ensures versatile compatibility with a wide range of panel configurations, simplifying installation and reducing downtime. Built to meet stringent safety standards, including UL 489 and CSA certification, the HCB-3/30/Q delivers reliable performance in demanding environments where electrical reliability is critical. This circuit breaker is ideal for **motor circuits, control panels, power distribution systems, and industrial machinery** where consistent protection against overloads and faults is essential. Its **compact, durable design** allows for easy integration into tight spaces while maintaining high interrupting ratings, ensuring long-term operational integrity. The **3-pole configuration** supports balanced three-phase systems, making it a preferred choice for applications requiring coordinated protection across all phases. Professionals in **manufacturing, data centers, renewable energy systems, and commercial facilities** rely on Littelfuse’s reputation for quality and innovation when selecting circuit protection solutions. The HCB-3/30/Q’s **dual-terminal design** (lugs for permanent wiring and quick-connect for modular assemblies) provides flexibility for both new installations and retrofits, reducing labor costs and accelerating project timelines. With a **30A rating at 120/240V**, it is well-suited for branch circuits powering motors, HVAC systems, lighting panels, and other high-demand loads. Littelfuse, a global leader in circuit protection, has decades of experience designing solutions that enhance safety and reliability in industrial applications. The HCB-3/30/Q exemplifies this commitment, offering **thermal-magnetic trip mechanisms** for precise fault detection and **high interrupting capacity** to handle transient surges without nuisance tripping. Its **UL 489-listed** status ensures compliance with North American electrical codes, while its **compact form factor** optimizes panel space without compromising performance. For engineers and electricians seeking a **cost-effective, high-reliability circuit breaker** for industrial environments, the Littelfuse HCB-3/30/Q stands out as a trusted solution. Whether used in **new construction, system upgrades, or maintenance projects**, this breaker provides the durability and protection needed to safeguard critical infrastructure. Pair it with Littelfuse’s complementary accessories, such as mounting hardware or terminal covers, for a complete, code-compliant installation. Trust Littelfuse for circuit protection that meets the demands of modern industrial applications.
  • 120/240V 30A 3-pole circuit breaker for industrial/commercial use
  • Dual terminal design: lugs for permanent wiring + quick-connect for modular assemblies
  • UL 489 and CSA certified for compliance with North American safety standards
  • Compact, durable construction for space-constrained panel installations
  • Thermal-magnetic trip mechanism for precise overcurrent and short-circuit protection

Specifications

Connection Type
Lugs/Quick Connect
Current Rating
30 A
Poles
3P
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.