Siemens | EE3B045L | Circuit Breaker | 45A | 3-Pole | 240V

Siemens EE3B045L is a purpose-built 45A, 3-Pole, 240V circuit breaker designed to slot into compatible Siemens panels for reliable overcurrent protection on 3-wire and multi-load circuits. Built for maintenance, retrofit, and replacement projects, this unit helps you restore safe operation quickly without sacrificing panel compatibility.

Why this breaker stands out is its precise fit and a reference-point you can trust. The part number EE3B045L is the clearest indicator of compatibility, so you’re less likely to encounter fit issues or mismatched ratings during a panel upgrade or service call. This specificity is especially valuable when you’re sorting through multiple replacement options and need to avoid guesswork.

Key specifications

• Amperage: 45A
• Poles: 3-Pole
• Voltage: 240V
• Part reference: EE3B045L

What problems this breaker solves

• Provides dependable protection for 3-pole 240V circuits, helping prevent overloaded conductors and potential equipment damage.
• Delivers a reliable, drop-in replacement option for Siemens panels that require the EE3B045L specification, reducing downtime during maintenance or retrofit.
• Supports safer service work by ensuring all relevant conductors trip together in an overcurrent event, maintaining consistent protection across the circuit.

Use cases and ideal scenarios

• Panel maintenance: replace a failing 3-pole 240V breaker in Siemens installations with a like-for-like EE3B045L.
• Retrofit projects: bring older or mismatched panels up to spec with a precise Siemens-compatible component.
• New installations in Siemens-compatible distributions that require a 45A, 3-pole 240V breaker for motor loads or balanced multi-load circuits.

How to ensure a perfect fit

Before ordering, confirm that your panel accepts an EE3B045L-type breaker and that the full ratings align with your circuit requirements. The part number is the most reliable reference for compatibility, helping you avoid mismatches and unnecessary returns.

Designed with Siemens reliability in mind, the EE3B045L offers clear benefits for professionals handling maintenance, retrofit, and replacement tasks. It’s not just a component—it’s part of a safe, code-compliant electrical system that keeps critical loads protected and operating smoothly. If your project specifies a 45A, 3-Pole, 240V Siemens breaker, this part is the targeted, precise match you’re seeking.