Why Choose the Lovato P1MBUH3PD12 Miniature Circuit Breaker?
The Lovato P1MBUH3PD12 is a high-performance three-pole miniature circuit breaker (MCB) designed for branch-circuit protection in industrial electrical installations. Part of the Lovato P1 MB series, this circuit breaker combines thermal-magnetic overcurrent protection with a D tripping characteristic for circuits where higher starting or inrush currents may occur.
Designed for compliance with UL 489 requirements, the P1MBUH3PD12 provides dependable protection against overload and short-circuit conditions. Its three-pole configuration enables simultaneous protection of three-phase circuits, while its modular construction allows straightforward installation on standard 35 mm DIN rail inside electrical distribution boards and control panels.
With a rated current of 12 A, a D tripping curve and a 10 kA short-circuit rating, the P1MBUH3PD12 is suitable for demanding industrial branch circuits. It is rated at 480Y/277 V AC under UL and operates at 50/60 Hz, making it suitable for a wide range of industrial electrical protection applications.
Key Advantages
- Three-pole miniature circuit breaker for three-phase branch-circuit protection.
- 12 A rated current for appropriately sized industrial loads and circuits.
- D tripping characteristic suitable for loads with relatively high starting or inrush currents.
- 10 kA short-circuit rating for robust fault protection.
- UL 489 compliant for branch-circuit protection applications.
- Compact three-module DIN rail format simplifies installation in control and distribution panels.
Key Features
- Lovato P1 MB miniature circuit breaker series.
- 3-pole configuration with all three poles protected.
- 12 A rated current.
- Curve D instantaneous tripping characteristic.
- 480Y/277 V AC UL operational voltage.
- 230/400 V AC IEC operational voltage.
- 10 kA short-circuit rating.
- 50/60 Hz rated frequency.
- IP20 protection rating.
- Mounting on standard 35 mm DIN rail.
Reliable Branch-Circuit Protection
Miniature circuit breakers such as the Lovato P1MBUH3PD12 provide automatic protection by disconnecting a circuit when excessive current occurs due to an overload or short circuit. Thermal-magnetic operation combines time-dependent overload protection with rapid magnetic operation during severe fault-current conditions.
The D tripping characteristic is particularly useful where equipment can produce significant short-duration inrush currents during start-up. Combined with its three-pole construction, 10 kA interrupting capability and UL 489 compliance, the P1MBUH3PD12 provides a practical protection solution for industrial three-phase branch circuits.
Typical Applications
- Industrial three-phase branch-circuit protection.
- Electrical control panels and distribution boards.
- Industrial machinery and automation systems.
- Circuits supplying equipment with higher starting currents.
- OEM machine-building electrical systems.
- Industrial power distribution and control installations.
