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P1MB3PB50 – MINIATURE CIRCUIT BREAKER 3P CURVE B 50A
Lovato P1MB3PB50 three-pole miniature circuit breaker with a 50 A rated current, B tripping curve and 10 kA short-circuit breaking capacity for industrial and commercial circuit protection.
£57.64
Why Choose the Lovato P1MB3PB50 Miniature Circuit Breaker?
The Lovato P1MB3PB50 is a robust three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the dependable Lovato P1MB modular circuit protection range, it is suitable for industrial control panels, commercial distribution boards, building services and OEM machinery requiring reliable three-phase protection.
This miniature circuit breaker combines a 50 A rated current, B tripping characteristic and 10 kA short-circuit breaking capacity. Its thermal-magnetic operating mechanism responds to sustained overloads and high fault currents, helping protect cables, connected equipment and electrical installations.
Designed for use on 230/400 V AC systems, the P1MB3PB50 occupies three DIN modules and mounts directly onto a standard 35 mm DIN rail. Its compact format, solid construction and compliance with recognised international standards make it a practical choice for demanding professional installations.
Key Advantages
- Dependable three-pole miniature circuit breaker for three-phase systems.
- 50 A rated current for higher-current industrial and commercial circuits.
- 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 helps conserve enclosure space.
- Fast installation onto a standard 35 mm DIN rail.
- Long mechanical and electrical operating life.
Key Features
- Lovato P1MB miniature circuit breaker series.
- Three-pole (3P) configuration.
- 50 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.
- 50/60 Hz rated frequency.
- Current-limiting class 3.
- Thermal-magnetic tripping mechanism.
- Three DIN modules wide.
- 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 prolonged overload conditions, while magnetic protection provides rapid disconnection during a short circuit. This combined action helps reduce the risk of damaged conductors, failed equipment and unsafe operating conditions.
The Lovato P1MB3PB50 disconnects and protects all three poles simultaneously. Its B curve characteristic is suited to circuits with relatively low starting currents, including resistive heating, distribution circuits, control equipment and general-purpose electrical loads.
Typical Applications
- Industrial control panels and switchboards.
- Commercial electrical distribution boards.
- Three-phase distribution circuits.
- Resistive heating installations.
- Building services and infrastructure.
- Automation and process control systems.
- OEM machinery and production equipment.
- General-purpose electrical protection circuits.
Technical Specifications
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| Current | 50 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | Lovato Electric | |
| Series | P1MB | |
| Model | P1MB3PB50 | |
| Product type | Miniature circuit breaker | |
| Number of poles | 3P | |
| Number of DIN modules | 3 | |
| Rated current | 50 A | |
| Tripping characteristic | B curve | |
| Short-circuit breaking capacity | 10 kA | |
| Current-limiting class | Class 3 | |
| Rated operational voltage | 230/400 V AC | |
| Rated insulation voltage (Ui) | 440 V | |
| Rated impulse withstand voltage (Uimp) | 4 kV | |
| Rated frequency | 50/60 Hz | |
| Maximum power dissipation per pole | 3.5 W | |
| Electrical life | 10,000 cycles | |
| Mechanical life | 20,000 cycles | |
| Operating temperature | -40°C to +70°C | |
| Storage temperature | -40°C to +80°C | |
| Maximum operating altitude | 2,000 m | |
| Mounting position | Vertical plane | |
| Mounting type | 35 mm DIN rail | |
| Terminal conductor capacity | 1 to 35 mm² | |
| Terminal tightening torque | 1.8 to 2 Nm | |
| Terminal tool | PZ2 | |
| Protection rating | IP20 | |
| Pollution degree | 2 | |
| Weight | 345 g | |
| Compliance | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA C22.2 No. 235 | |
| Certifications | cURus, EAC and TÜV Rheinland | |
| EAN | 8013975203644 | |
| HS Code | 85362010 |
Frequently Asked Questions
What is the Lovato P1MB3PB50 used for?
The Lovato P1MB3PB50 protects three-phase electrical circuits against overloads and short circuits in industrial, commercial and OEM installations.
What is the rated current of the P1MB3PB50?
The miniature circuit breaker has a rated current of 50 A.
What does the B tripping curve mean?
A B tripping curve is generally suitable for resistive loads and circuits with relatively low starting or inrush currents.
What is the short-circuit breaking capacity?
The Lovato P1MB3PB50 provides a rated short-circuit breaking capacity of 10 kA.
What voltage is the P1MB3PB50 designed for?
The breaker is designed for electrical systems with a rated operational voltage of 230/400 V AC.
How is the Lovato P1MB3PB50 installed?
It occupies three DIN modules and mounts onto a standard 35 mm DIN rail inside a suitable electrical enclosure or distribution board.
Trusted by Electrical Professionals Worldwide
Lovato miniature circuit breakers are used by panel builders, OEM manufacturers and electrical contractors to deliver dependable overload and short-circuit protection across industrial, commercial and building-services applications.
