Siemens | BQ2B125HL | Circuit Breaker | 2-Pole | 240V | Bolt-On

Siemens BQ2B125HL is a precise, bolt-on circuit breaker designed for Siemens panels that require a 2-pole, 240-volt device. Built for maintenance, retrofit, and replacement projects, this unit is the exact-fit solution when you need reliable, panel-compatible protection without guesswork.

Why choose a bolt-on design? The BQ2B125HL delivers a secure, vibration-resistant connection that stays tight under panel duties, reducing the risk of loose connections over time. The 2-pole configuration supports typical 240V circuits and multi-wire branch circuits that share a neutral, making it a practical choice for residential upgrades and light commercial applications within Siemens ecosystems.

• Poles: 2-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Part number: BQ2B125HL

Ideal use cases

• Maintenance or replacement in existing Siemens bolt-on panels where a direct compatible part is required
• Retrofits that demand a precise match to the panel’s bus configuration and ratings
• New installations or panel upgrades within residential, commercial, and light-industrial environments that employ Siemens bolt-on breakers

Fit, compatibility, and installation tips

To ensure a perfect fit, verify that your panel matches the BQ series bolt-on configuration and that a 240V, 2-pole protection device is appropriate for the circuit. The part number, BQ2B125HL, remains the most reliable reference for compatibility—always cross-check it against your panel labeling or service documentation before ordering.

When installing, follow standard safety procedures: disconnect power at the main, test for absence of voltage on the circuit, and secure the breaker per your panel’s instructions. Use the panel’s torque specifications for the mounting screws to ensure a safe, durable connection.

What makes this Siemens breaker stand out

• Direct-fit, bolt-on design minimizes guesswork during replacement—no adapters needed
• Clear, Siemens-specific compatibility with bolt-on panels to support reliable long-term operation
• Focused on practical, real-world use: retrofit-ready, maintenance-friendly, and construction-ready for Siemens installations