Siemens ED22B045 - 45 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens ED22B045 - 45A, 240V, 2-pole bolt-on molded case circuit breaker is engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing the risk of loose contacts that can cause overheating and trips.

Thermal-magnetic protection you can rely on

Featuring a thermal-magnetic trip unit, this breaker offers stable, repeatable protection performance across varying temperatures and electrical transients. The 45A rating is ideal for protecting typical residential and light commercial circuits, while ensuring swift interruption of faults to safeguard wiring and equipment.

Key specifications at a glance

• Amperage: 45 A
• Voltage: 240 V
• Poles: 2
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Designed to fit seamlessly in your electrical system

Compatible with matching OEM load centers and panelboards, making it a practical choice for upgrades or replacements in existing installations. This unit excels in:

• Residential distribution panels and subpanels
• Small commercial electrical panels
• Light industrial applications demanding reliable protection

Why this Siemens unit stands apart

• Secure bolt-on mounting reduces vibration-induced wear and arcing risk, preserving long-term bus connection integrity.
• Thermal-magnetic protection delivers fast, predictable tripping for short circuits while minimizing nuisance trips on temporary overloads.
• 2-pole design ensures simultaneous disconnection of both conductors, enhancing safety and fault-clearing performance.
• Built with Siemens engineering and quality, offering straightforward compatibility within Siemens OEM panel systems for streamlined installation and replacements.

Practical tips for installation and use

• Select the correct amperage and voltage for the circuit being protected, and ensure the panelboard is listed for bolt-on breakers of this type.
• Mount the breaker on the appropriate bus to achieve a solid, vibration-resistant connection that supports reliable operation.
• Coordinate upstream protection and downstream branch circuits to prevent nuisance trips and ensure safe, consistent performance.
• When replacing an existing breaker, verify that the new unit matches the panelboard’s approved catalogs and maintains the same voltage, amperage, and mounting style.