Siemens HED41B020L - 20 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens HED41B020L — a 20 A, 277 V, 1-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for reliability in commercial, residential, and light industrial environments, this unit pairs precise protection with straightforward installation, making it a smart choice for upgrading or hardening electrical distributions.

• Bolt-on mounting: provides a rigid, vibration-resistant bus connection that stays secure through regular operation and on-site vibration, reducing looseness over time.
• Thermal-magnetic trip unit: combines temperature-sensitive and instantaneous magnetic elements for stable, repeatable protection, fighting nuisance trips while responding quickly to faults.
• OEM compatibility: engineered to fit matching Siemens load centers and panelboards, ensuring a clean, code-compliant integration with existing systems.
• 277 V single-pole design: ideal for commercial lighting circuits and other 277 V applications, enabling efficient protection without mounting multiple devices.
• Versatile applications: suitable for residential, commercial, and light industrial electrical installations that demand reliable 20 A protection on 1-pole circuits.

Specifications at a glance

• Manufacturer: Siemens
• Part number: HED41B020L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 20 A
• Voltage rating: 277 V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

Choose the Siemens HED41B020L when you need reliable protection for 277 V circuits in panelboards and load centers. It’s a practical fit for commercial offices, retail spaces, schools, and light industrial facilities where space is at a premium and protection needs to be consistent across multiple shifts and environments. Its bolt-on design is particularly advantageous in installations that prioritize solid mechanical connections and long-term reliability in vibration-prone settings.

Installation and compatibility tips

• Verify panelboard compatibility with Siemens OEM load centers to ensure proper fit and coordination with other protective devices.
• Follow manufacturer torque specifications during bolt-on mounting to maintain the integrity of the bus connection.
• Use like-for-like replacements to preserve system protection coordination and minimize nuisance trips.
• Pair with appropriate conductors and terminations rated for 277 V to maximize performance and safety.

With the Siemens HED41B020L, you’re selecting a purpose-built solution that prioritizes precise protection, durable mounting, and compatibility with Siemens distribution products. This 20 A, 277 V, 1-pole bolt-on breaker delivers consistent protection for critical circuits, helping to keep facilities safe and operations uninterrupted.