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P1MB3PD50 – MINIATURE CIRCUIT BREAKER 3P CURVE D 50A
Lovato P1MB3PD50 3-pole miniature circuit breaker with a 50 A rated current, D tripping characteristic and 10 kA short-circuit breaking capacity for high-inrush industrial circuits.
£57.64
Why Choose the Lovato P1MB3PD50 Miniature Circuit Breaker?
The Lovato P1MB3PD50 is a robust 3-pole miniature circuit breaker (MCB) designed to protect three-phase 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, machinery, commercial distribution systems and OEM electrical equipment.
This miniature circuit breaker combines a 50 A rated current, a D tripping characteristic and a 10 kA short-circuit breaking capacity. The D curve response accommodates high temporary inrush currents, making the P1MB3PD50 particularly suitable for transformers, motors, industrial power supplies and other inductive electrical loads.
The P1MB3PD50 features a compact 3-pole, three-module configuration and is designed for straightforward DIN rail installation. Its thermal-magnetic operation, class 3 current-limiting performance and compliance with recognised international standards make it a reliable choice for panel builders, electrical engineers and machine manufacturers.
Key Advantages
- Dependable overload and short-circuit protection for three-phase circuits.
- 50 A rated current for industrial machinery and distribution applications.
- D curve tripping characteristic suitable for high inrush currents.
- 10 kA short-circuit breaking capacity.
- Compact 3-pole, three-module construction.
- Conforms to recognised IEC, EN, UL and CSA standards.
Key Features
- Lovato P1MB miniature circuit breaker series.
- 3-pole configuration.
- 50 A rated current.
- D tripping characteristic.
- 10 kA IEC short-circuit rating.
- 230/400 V AC rated operational voltage.
- 50/60 Hz rated frequency.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Current-limiting class 3 performance.
- Thermal-magnetic circuit protection.
- Standard DIN rail mounting.
Reliable Protection for High-Inrush Circuits
Miniature circuit breakers automatically disconnect electrical circuits when excessive current is detected. Thermal protection responds to sustained overload conditions, while magnetic protection provides rapid isolation during short circuits, helping protect cables, connected equipment and electrical assemblies.
The Lovato P1MB3PD50 uses a D curve characteristic that permits higher temporary starting currents than B or C curve breakers. This helps reduce nuisance tripping when energising transformers, motors, industrial power supplies and other equipment with substantial inrush current.
Typical Applications
- Industrial control and automation panels.
- Transformer protection circuits.
- Motor and inductive load circuits.
- Industrial power supplies.
- Three-phase electrical distribution systems.
- Machine building and OEM equipment.
Technical Specifications
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| Current | 50 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | Lovato Electric | |
| Series | P1MB | |
| Model | P1MB3PD50 | |
| Product type | Miniature circuit breaker (MCB) | |
| Number of poles | 3 | |
| Number of DIN modules | 3 | |
| Rated current | 50 A | |
| Tripping characteristic | D curve | |
| Short-circuit breaking capacity | 10 kA | |
| Current-limiting class | Class 3 | |
| Rated operational voltage | 230/400 V AC | |
| Rated frequency | 50/60 Hz | |
| Rated insulation voltage (Ui) | 440 V | |
| Rated impulse withstand voltage (Uimp) | 4 kV | |
| Power dissipation per pole | Maximum 3.5 W | |
| Protection mechanism | Thermal-magnetic | |
| Mounting type | DIN rail mounting | |
| Operating temperature | -40°C to +70°C | |
| Storage temperature | -40°C to +80°C | |
| Maximum operating altitude | 2,000 m | |
| Electrical life | 10,000 cycles | |
| Mechanical life | 20,000 cycles | |
| Protection rating | IP20 | |
| Pollution degree | 2 | |
| Weight | Approx. 345 g | |
| Compliance | IEC/EN 60898-1 and IEC/EN 60947-2 | |
| Additional compliance | UL 1077 and CSA C22.2 No. 235 | |
| HS Code | 85362010 |
Frequently Asked Questions
What is the Lovato P1MB3PD50 used for?
The P1MB3PD50 protects three-phase electrical circuits against overloads and short circuits, particularly where connected equipment produces high temporary starting currents.
What is the rated current of the P1MB3PD50?
The miniature circuit breaker has a rated current of 50 A.
What does the D tripping characteristic mean?
A D curve circuit breaker tolerates relatively high temporary inrush currents before magnetic tripping, making it suitable for transformers, motors and industrial power supplies.
What is the short-circuit breaking capacity?
The Lovato P1MB3PD50 has an IEC short-circuit breaking capacity of 10 kA.
How is the P1MB3PD50 installed?
The breaker occupies three DIN modules and mounts onto a standard DIN rail inside an electrical control panel or distribution board.
Trusted by Electrical Professionals Worldwide
Lovato P1MB miniature circuit breakers are selected by panel builders, machine manufacturers and electrical engineers requiring dependable circuit protection, compact installation and compliance with recognised international standards.
