Circuit Breaker Blocker

Mechanical safety lock for miniature circuit breakers (MCB)

This part is designed to physically block the toggle lever of standard DIN-rail circuit breakers, preventing them from being switched ON accidentally during maintenance or servicing.

Ideal for electrical panels where you need an extra mechanical safeguard to avoid unintended re-energizing of a circuit.

⚙️ Purpose

• Prevents accidental reactivation of a breaker
• Adds a visible physical safety barrier
• Useful during maintenance work
• Simple and fast to install/remove

🛠 Compatibility

• Designed for standard DIN rail miniature circuit breakers (MCB)
• Compatible with most European-style magnetothermal breakers
• Please verify dimensions against your specific breaker model before printing

⚠️ Important Notice

This is a mechanical accessory only.
It does not replace official lockout/tagout safety procedures and does not electrically isolate the circuit. Always follow proper electrical safety regulations.