Why Choose the Lovato P1MB3PB40 Miniature Circuit Breaker?
The Lovato P1MB3PB40 is a reliable three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the established Lovato P1MB modular circuit protection range, it provides dependable protection for industrial control panels, commercial distribution boards, building services and OEM machinery.
This miniature circuit breaker combines a 40 A rated current, B tripping characteristic and 10 kA short-circuit breaking capacity. Its thermal-magnetic operating mechanism responds to sustained overloads and severe fault currents, helping protect electrical conductors, switchgear and connected equipment.
Designed for use on 230/400 V AC systems, the P1MB3PB40 occupies three DIN modules and mounts directly onto a standard 35 mm DIN rail. Its compact design, robust construction and compliance with recognised international standards make it a practical choice for professional electrical installations.
Key Advantages
- Dependable three-pole miniature circuit breaker for three-phase circuits.
- 40 A rated current for industrial and commercial applications.
- B tripping characteristic suitable for circuits with relatively low inrush currents.
- 10 kA breaking capacity for reliable short-circuit protection.
- Simultaneous switching and protection across all three poles.
- Compact three-module design conserves enclosure space.
- Quick mounting onto a standard 35 mm DIN rail.
- Compliant with IEC, EN, UL and CSA circuit protection standards.
Key Features
- Lovato P1MB miniature circuit breaker series.
- Three-pole (3P) configuration.
- 40 A rated current.
- B tripping curve.
- 10 kA short-circuit breaking capacity.
- 230/400 V AC rated operational voltage.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Three DIN modules wide.
- Thermal-magnetic tripping mechanism.
- Screw terminal connections.
- Standard 35 mm DIN rail mounting.
- Front protection rating of IP20.
Reliable Protection for Three-Phase Electrical Circuits
Miniature circuit breakers automatically disconnect electrical circuits when excessive current is detected. Thermal protection responds to sustained overload conditions, while the magnetic trip mechanism provides rapid disconnection during a short circuit. This combined protection helps reduce the risk of damaged wiring, equipment failure and unsafe operating conditions.
The Lovato P1MB3PB40 protects and disconnects all three phases simultaneously. Its B curve characteristic is particularly suited to circuits with relatively low starting currents, including resistive loads, heating systems, lighting, control equipment and general electrical distribution circuits.
Typical Applications
- Industrial control panels and switchboards.
- Commercial electrical distribution boards.
- Three-phase control and auxiliary circuits.
- Resistive heating circuits.
- Lighting and general-purpose electrical loads.
- Building services installations.
- Automation and process control systems.
- OEM machinery and production equipment.
