Lovato P2MB4PD125 four-pole 125A miniature circuit breaker with D curve tripping characteristic, 230/400V AC rating and 10kA short-circuit breaking capacity.
£301.52
The Lovato P2MB4PD125 is a heavy-duty four-pole miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in demanding industrial and commercial electrical installations. As part of the established Lovato P2MB series, it combines high-current protection, robust construction and straightforward DIN rail installation for modern power distribution systems.
Featuring a D characteristic tripping curve, the P2MB4PD125 is particularly suited to equipment that produces high starting or inrush currents. This makes it an effective protective solution for transformers, motors, solenoids, power supplies and other inductive loads where a more sensitive circuit breaker could trip during normal start-up.
With a rated current of 125 A, a 230/400 V AC operational voltage and a 10 kA short-circuit breaking capacity, the P2MB4PD125 delivers reliable protection for high-current electrical circuits. Its four-pole configuration enables simultaneous switching of three phase conductors and the neutral conductor.
Miniature circuit breakers automatically disconnect an electrical circuit when an overload or short circuit occurs. This helps protect conductors, connected equipment and electrical installations from damage while supporting safer and more dependable system operation.
The D curve response of the Lovato P2MB4PD125 allows it to tolerate the momentary current peaks generated when motors, transformers and other inductive devices are energised. This helps prevent unnecessary tripping while maintaining effective protection against sustained overloads and electrical faults.
| Current | 125 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | Lovato Electric |
| Series | P2MB |
| Model | P2MB4PD125 |
| Product type | Miniature circuit breaker |
| Number of poles | 4P |
| Rated current | 125 A |
| Tripping characteristic | D curve |
| Rated operational voltage | 230/400 V AC |
| DC operational voltage | Up to 60 V DC |
| Short-circuit breaking capacity | 10 kA |
| Rated frequency | 50/60 Hz |
| Mounting type | 35 mm DIN rail |
| Terminal type | Screw terminals |
| Flexible conductor capacity | 2.5–50 mm² |
| Compliance | IEC/EN 60947-2, UL 1077 and CSA C22.2 No. 235 |
| Certifications | TÜV Rheinland, cURus and EAC |
| HS Code | 85362090 |
It provides overload and short-circuit protection for four-pole industrial and commercial electrical circuits, particularly those supplying equipment with high starting currents.
The Lovato P2MB4PD125 has a rated current of 125 A.
A D curve circuit breaker tolerates higher momentary inrush currents before tripping, making it suitable for motors, transformers, solenoids and other inductive loads.
The P2MB4PD125 has a rated short-circuit breaking capacity of 10 kA.
The circuit breaker complies with IEC/EN 60947-2, UL 1077 and CSA C22.2 No. 235.
Lovato miniature circuit breakers are used by panel builders, machine manufacturers and electrical engineers to provide dependable circuit protection and effective isolation within demanding industrial and commercial electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...