Siemens HED41B030 - 30 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens HED41B030 is a 30A, 277V, 1-pole bolt-on molded case circuit breaker designed to protect branch circuits in panelboards and load centers.

Its secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, minimizing movement that can jeopardize performance in busy electrical panels and motor-driven environments.

The thermal-magnetic trip unit provides stable, repeatable protection against overcurrent and short-circuit conditions, helping to prevent nuisance trips while safeguarding equipment and wiring.

Engineered for compatibility with matching OEM load centers and panelboards, this breaker is a practical choice across a range of settings—from residential installations to commercial spaces and light industrial applications that rely on reliable single-pole protection at 277V.

Key specifications

• Amperage rating: 30A
• Voltage rating: 277V
• Number of poles: 1 (single-pole)
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection
• Manufacturer: Siemens
• Part number: HED41B030

Use cases and practicality

• Protecting 277V lighting circuits and outlets in commercial spaces where reliable single-pole protection is required
• Replacement or upgrade in existing Siemens OEM panelboards and load centers to restore secure, code-compliant protection
• Installations in residential setups or light industrial panels where vibration resistance and durable bus connections matter

Why this matters

Choosing a bolt-on design means a more secure, vibration-resistant bus connection, reducing the risk of loose contacts over time. The thermal-magnetic protection curve ensures quick, predictable responses to faults, helping minimize downtime and potential damage to downstream equipment.

Practical notes

• Verify OEM compatibility with your specific panelboard or load center to ensure a perfect fit and electrical performance
• Follow all applicable electrical codes and safety practices during installation
• Consult Siemens installation guidelines for mounting hardware and torque recommendations to maintain the integrity of the bolt-on connection

For dependable, straightforward branch circuit protection with industry-grade reliability, the Siemens HED41B030 delivers precise, repeatable performance in a compact, single-pole package.