Circuit breaker Schneider Electric SCEO2345CTB 45 A 3-pole, thermal-magnetic protection

Schneider Electric SCEO2345CTB is a 3-pole circuit breaker rated at 45 A that provides combined thermal and magnetic protection for three-phase electrical circuits. It is designed to interrupt overloads and short circuits, making it suitable for distribution boards in residential and commercial installations. The device offers compact dimensions and straightforward replacement in panel assemblies while ensuring selective protection of connected circuits.

Advantages

The circuit breaker combines thermal trip elements for overload protection with magnetic trip elements for short-circuit protection, delivering reliable interruption of fault currents. Its 3-pole configuration allows simultaneous disconnection of all phases to maintain system safety and balance. The 45 A rating supports a range of branch circuit loads, and the product is designed for ease of installation and service in typical distribution board layouts.

Suitable for

• Protection of three-phase branch circuits in residential electrical panels
• Commercial distribution boards requiring selective overload and short-circuit protection
• Replacement of existing 3-pole protective devices with a 45 A rating
• Applications where compact, panel-mounted thermal-magnetic protection is needed

Key specifications

• Poles: 3-pole configuration for three-phase circuits
• Rated current: 45 A
• Protection type: thermal-magnetic (overload and short-circuit protection)
• Mounting: panel/distribution board mounting (compact form factor)
• Function: simultaneous disconnection of all phases for improved safety

How to use

Install the Schneider Electric SCEO2345CTB in the distribution board according to local electrical codes and the panel manufacturer's instructions. Ensure power is switched off before wiring. Connect incoming and outgoing conductors to the appropriate pole terminals, verify correct tightness of terminal connections, and confirm correct trip coordination with upstream and downstream protective devices. After installation, restore power and test operation by applying normal load and, where safe and permitted, verifying trip response under controlled test conditions.

Usage recommendations

Always comply with national and local electrical safety regulations when installing or replacing circuit breakers. Verify compatibility with the electrical system, ensure correct coordination with other protective devices in the distribution board, and perform periodic inspections to confirm terminals are secure and the device exhibits normal mechanical operation.