Why Choose the Lovato P1MBUL3PC50 Miniature Circuit Breaker?
The Lovato P1MBUL3PC50 is a robust three-pole miniature circuit breaker (MCB) designed to protect industrial and commercial electrical circuits against overloads and short circuits. Part of the established Lovato Electric P1MB series, it combines thermal and magnetic protection in a compact modular device suitable for machinery, control panels and electrical distribution systems.
Featuring a rated current of 50 A, a Type C tripping characteristic and an IEC short-circuit rating of 10 kA, the P1MBUL3PC50 is suitable for circuits supplying equipment with moderate starting currents. Typical loads include motors, transformers, contactors, power supplies and other inductive electrical equipment.
The circuit breaker has a three-pole configuration and occupies three DIN modules, enabling all three protected conductors to be disconnected together when an electrical fault occurs. Compliance with IEC/EN 60947-2 and UL 489 supports its use in industrial installations, OEM machinery and internationally specified control systems.
Key Advantages
Dependable three-pole overload and short-circuit protection.
50 A rated current for higher-current three-phase circuits.
Type C tripping curve suitable for moderate inrush currents.
High 10 kA IEC short-circuit rating.
Simultaneous disconnection of all three protected poles.
Compact three-module construction conserves panel space.
Standard DIN rail mounting simplifies installation and replacement.
Suitable for industrial equipment built to IEC and UL standards.
Key Features
Lovato Electric P1MB series miniature circuit breaker.
Three-pole configuration.
50 A nominal current rating.
Type C thermal-magnetic tripping characteristic.
10 kA IEC short-circuit rating.
230/400 V AC rated operational voltage under IEC conditions.
240 V AC rated operational voltage under UL conditions.
440 V rated insulation voltage.
4 kV rated impulse withstand voltage.
50/60 Hz rated frequency.
Three-DIN-module width.
Conforms to IEC/EN 60947-2 and UL 489.
Reliable Protection for Three-Phase Electrical Circuits
The Lovato P1MBUL3PC50 uses a thermal-magnetic operating mechanism to provide two complementary forms of circuit protection. The thermal element responds to sustained overload currents, while the magnetic element rapidly disconnects the circuit when a high short-circuit current is detected.
Its Type C response characteristic allows the circuit breaker to tolerate moderate temporary inrush currents without unnecessary tripping. This makes it suitable for circuits supplying motors, transformers, contactors, solenoids and power supplies while maintaining dependable protection during electrical faults.
Typical Applications
Industrial electrical control panels.
Three-phase machinery circuits.
Motor control and automation equipment.
Transformers and inductive loads.
Control-system power supplies.
Manufacturing and processing machinery.
Commercial electrical distribution systems.
OEM machine-building projects.
Technical Specifications
Current
50 A
Phase
Three Phase
Manufacturer
Lovato Electric
Series
P1MB
Model
P1MBUL3PC50
Product designation
Miniature circuit breaker
Number of poles
3P
Number of protected poles
3
Number of DIN modules
3
Rated current
50 A
Tripping characteristic
Type C
Tripping mechanism
Thermal-magnetic
Short-circuit rating, IEC
10 kA
Rated operational voltage, IEC
230/400 V AC
Rated operational voltage, UL
240 V AC
Rated insulation voltage
440 V
Rated impulse withstand voltage
4 kV
Rated frequency
50/60 Hz
Mounting type
DIN rail
Standards
IEC/EN 60947-2, UL 489
Certifications
cULus, EAC
HS Code
85362010
Frequently Asked Questions
What is the Lovato P1MBUL3PC50 used for?
The P1MBUL3PC50 protects three-pole electrical circuits against overloads and short circuits in industrial machinery, control panels and electrical distribution systems.
What is the rated current of the P1MBUL3PC50?
The miniature circuit breaker has a rated current of 50 A.
What does the Type C tripping characteristic mean?
A Type C characteristic is suitable for circuits with moderate starting currents, including motors, transformers, contactors and other inductive equipment.
What is the short-circuit rating of this circuit breaker?
The Lovato P1MBUL3PC50 has an IEC short-circuit rating of 10 kA.
What voltage ratings does the P1MBUL3PC50 support?
It is rated for 230/400 V AC under IEC conditions and 240 V AC under UL conditions.
How is the P1MBUL3PC50 installed?
The circuit breaker mounts onto a standard DIN rail and occupies three DIN modules inside an electrical enclosure or distribution panel.
Trusted Industrial Circuit Protection
Lovato Electric P1MB miniature circuit breakers are trusted by panel builders, machinery manufacturers and electrical engineers for reliable overload and short-circuit protection in industrial control and distribution applications.
Current
50 A
Phase
Three Phase
Manufacturer
Lovato Electric
Series
P1MB
Model
P1MBUL3PC50
Product designation
Miniature circuit breaker
Number of poles
3P
Number of protected poles
3
Number of DIN modules
3
Rated current
50 A
Tripping characteristic
Type C
Tripping mechanism
Thermal-magnetic
Short-circuit rating, IEC
10 kA
Rated operational voltage, IEC
230/400 V AC
Rated operational voltage, UL
240 V AC
Rated insulation voltage
440 V
Rated impulse withstand voltage
4 kV
Rated frequency
50/60 Hz
Mounting type
DIN rail
Standards
IEC/EN 60947-2, UL 489
Certifications
cULus, EAC
HS Code
85362010
No documents available for this product.
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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...