Siemens ED23B045 - 45 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens ED23B045 is a 45A, 240V, 3-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit protection in panelboards and load centers. Built for durability and steady performance, it’s a smart choice for electricians and facilities managers seeking solid, long-term protection for their electrical distribution.

Why the Siemens ED23B045 stands out

• Secure bolt-on mounting: A rigid, vibration-resistant bus connection minimizes loosening and arcing, enhancing reliability in busy electrical rooms and equipment spaces.
• Thermal-magnetic trip unit: Provides stable, repeatable protection against both overloads and short circuits, helping prevent damage to wiring and equipment.
• OEM-compatible design: Specifically designed to pair with matching Siemens OEM load centers and panelboards for a seamless, guaranteed fit.
• Versatile for multiple environments: Suitable for residential, commercial, and light industrial applications where dependable protection is essential.

What problems does it solve?

This 3-pole breaker protects three separate conductors tied to three-phase 240V systems, preventing overcurrent situations and quick, decisive interruption during short circuits. The bolt-on construction reduces vibration-induced wear and improves contact integrity, contributing to safer, more predictable operation over time.

Ideal use cases

• Upgrading or expanding panelboards in light commercial spaces or small industrial facilities.
• Retrofit installations where a secure, vibration-resistant connection is critical.
• Residential or commercial service panels requiring dependable 3-pole protection for 240V circuits.
• Protection of motor loads and distribution circuits that demand consistent trip performance.

Specifications at a glance

• Manufacturer: Siemens
• Part number: ED23B045
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 45A
• Voltage rating: 240V
• Poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for installation and long-term use

• Pair with matching Siemens OEM load centers and panelboards to ensure seamless compatibility and optimal performance.
• Install in a clean, accessible panel space to facilitate inspection and maintenance of the bus connections.
• Use this 3-pole unit where a 240V, three-phase protection scheme is required, or where three simultaneous conductors need synchronized overcurrent protection.
• Plan for future expansion: the 45A rating provides a balance between circuit protection and load requirements in many small-to-mid-size installations.

Choose the Siemens ED23B045 for a dependable, purpose-built solution that combines secure mounting, precise thermal-magnetic protection, and OEM-ready compatibility—delivering peace of mind for electrical systems in homes, businesses, and light industry.