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P1MB4PD40 – MINIATURE CIRCUIT BREAKER 4P CURVE D 40A
Lovato P1MB4PD40 four-pole miniature circuit breaker with a 40 A rated current, Type D tripping characteristic and 10 kA short circuit breaking capacity for industrial and commercial circuit protection.
£81.40
Why Choose the Lovato P1MB4PD40 Miniature Circuit Breaker?
The Lovato P1MB4PD40 is a robust 4-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in industrial, commercial and OEM installations. As part of the established Lovato P1MB modular protection range, it combines dependable thermal-magnetic protection with compact DIN rail mounting for straightforward installation in electrical panels and distribution boards.
Featuring a 40 A rated current, a D tripping characteristic and a 10 kA short circuit breaking capacity, the P1MB4PD40 is particularly suitable for circuits supplying equipment with high starting or inrush currents. It can be used in appropriately designed installations containing motors, transformers, solenoids and other inductive loads where tolerance of brief start-up surges is required.
With a 4-pole configuration, 230/400 V AC rated operational voltage and compact four-module construction, the P1MB4PD40 provides simultaneous switching and protection across four conductors. Its durable design makes it suitable for machinery, industrial automation systems, commercial distribution equipment and demanding control-panel applications.
Key Advantages
- Dependable 4-pole protection against overloads and short circuits.
- 40 A rated current for higher-load industrial and commercial circuits.
- D tripping characteristic suitable for equipment with high inrush currents.
- 10 kA short circuit breaking capacity for reliable fault interruption.
- Compact four-module DIN rail design for efficient panel installation.
- Resettable operation helps reduce maintenance and downtime after an electrical fault.
Key Features
- Lovato P1MB series miniature circuit breaker.
- 4 poles (4P).
- 40 A rated current.
- Type D thermal-magnetic tripping characteristic.
- 10 kA IEC short circuit rating.
- 230/400 V AC rated operational voltage.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- 50/60 Hz rated frequency.
- Compact four DIN module construction.
Reliable Protection for High-Inrush Electrical Loads
Miniature circuit breakers automatically disconnect an electrical circuit when excessive current is detected. This helps protect cables, control equipment and connected loads from damage caused by sustained overloads or short circuit faults.
The D tripping characteristic allows the P1MB4PD40 to tolerate higher instantaneous starting currents than equivalent Type B or Type C breakers. This makes it suitable for correctly designed circuits supplying motors, transformers and industrial equipment that can draw a brief surge of current when energised.
Typical Applications
- Industrial machinery and automation panels.
- Motor circuits with high starting currents.
- Transformer primary and auxiliary circuits.
- Solenoids and other inductive electrical loads.
- Commercial electrical distribution boards.
- OEM machinery and control systems.
Technical Specifications
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| Current | 40 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | Lovato Electric | |
| Series | P1MB | |
| Model | P1MB4PD40 | |
| Product type | Miniature circuit breaker (MCB) | |
| Number of poles | 4P | |
| Number of protected poles | 4 | |
| Number of DIN modules | 4 | |
| Rated current | 40 A | |
| Tripping characteristic | D | |
| Short circuit breaking capacity | 10 kA | |
| Current-limiting 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 | |
| Tripping mechanism | Thermal magnetic | |
| Mounting type | 35 mm DIN rail | |
| Terminal type | Screw terminals | |
| Protection rating | IP20 | |
| Electrical life | 10,000 operating cycles | |
| Approximate dimensions (H × W × D) | 86.5 × 72 × 80 mm | |
| Approximate weight | 490 g | |
| Applicable standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA C22.2 No. 235 | |
| HS Code | 85362010 |
Frequently Asked Questions
What is the Lovato P1MB4PD40 used for?
The P1MB4PD40 protects four-pole electrical circuits against overloads and short circuits, particularly where connected equipment produces high starting or inrush currents.
What is the rated current of the P1MB4PD40?
This miniature circuit breaker has a 40 A rated current.
What does the D tripping characteristic mean?
A Type D characteristic permits relatively high instantaneous inrush currents, making the breaker suitable for correctly designed circuits supplying motors, transformers and other inductive loads.
What is the short circuit breaking capacity?
The Lovato P1MB4PD40 has a 10 kA short circuit breaking capacity.
How is the Lovato P1MB4PD40 installed?
The breaker occupies four DIN modules and mounts onto a standard 35 mm DIN rail inside a compatible electrical enclosure or distribution board.
Trusted by Electrical Professionals Worldwide
Lovato Electric miniature circuit breakers are specified by panel builders, machine manufacturers and electrical contractors for dependable protection, compact installation and consistent performance in industrial electrical systems.
