P1MBUH1PD01 Lovato MCB 1P D1 277V 10kA UL489

P1MBUH1PD01 Lovato MCB 1P D1 277V 10kA UL489

Lovato P1MBUH1PD01 is a single-pole 1 A Curve D UL489 miniature circuit breaker rated at 277 V AC under UL with a 10 kA short-circuit rating for industrial branch circuit protection.

SKU: P1MBUH1PD01
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List Price £58.22 ex VAT
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Why Choose the Lovato P1MBUH1PD01 Miniature Circuit Breaker?

The Lovato P1MBUH1PD01 is a compact and reliable single-pole miniature circuit breaker (MCB) designed to provide thermal-magnetic overcurrent and short-circuit protection in industrial control and electrical distribution applications. As part of the Lovato P1 MB miniature circuit breaker series, it combines a low 1 A current rating with Curve D tripping characteristics and UL489 compliance for branch circuit protection applications.

The P1MBUH1PD01 features a Curve D tripping characteristic, making it particularly suitable for circuits and equipment that can experience higher transient inrush currents. Its single-pole configuration occupies only one DIN module, providing space-efficient protection for industrial control panels, machinery and OEM electrical systems.

With a rated current of 1 A, a UL rated operational voltage of 277 V AC and a short-circuit rating of 10 kA under both IEC and UL specifications, the P1MBUH1PD01 provides dependable circuit protection in demanding installations. The breaker mounts directly onto a standard 35 mm DIN rail for straightforward panel integration.

Key Advantages

  • Compact single-pole miniature circuit breaker for industrial circuit protection.
  • 1 A rated current for low-current electrical and control circuits.
  • Curve D tripping characteristic suitable for circuits with higher transient inrush currents.
  • 277 V AC UL rated operational voltage.
  • 10 kA short-circuit rating under both IEC and UL specifications.
  • UL489 compliant for branch circuit protection applications.

Key Features

  • Lovato P1 MB miniature circuit breaker series.
  • 1-pole configuration occupying 1 DIN module.
  • 1 A rated current.
  • Curve D tripping characteristic.
  • 277 V AC operational voltage under UL.
  • 10 kA IEC and UL short-circuit rating.
  • 440 V rated insulation voltage Ui.
  • 4 kV rated impulse withstand voltage Uimp.
  • 10,000-cycle electrical life and 20,000-cycle mechanical life.
  • Front protection rating of IP20.

Reliable UL489 Branch Circuit Protection

Miniature circuit breakers such as the Lovato P1MBUH1PD01 automatically interrupt a circuit when excessive current results from an overload or short circuit. Its thermal-magnetic operating mechanism combines thermal overload protection with rapid magnetic operation during high fault-current conditions, helping protect conductors and connected electrical equipment.

The P1MBUH1PD01 combines UL489 compliance with a Curve D characteristic, making it suitable for branch circuits where higher starting or transient currents can occur. Its 1 A rating, 277 V AC UL operational voltage, 10 kA short-circuit rating and single-module DIN rail format make it a practical protection device for industrial machinery and control systems.

Typical Applications

  • Industrial electrical control panels.
  • UL489 branch circuit protection.
  • Low-current control and auxiliary circuits.
  • Industrial machinery and automation equipment.
  • Circuits with higher transient inrush currents.
  • OEM electrical control and distribution systems.

Technical Specifications

Phase Single Phase
Manufacturer Lovato Electric
Series P1 MB
Model P1MBUH1PD01
Product type Miniature circuit breaker (MCB)
Number of poles 1P
Number of DIN modules 1
Rated current In 1 A
Tripping curve D
Rated operational voltage AC (UL) 277 V AC
Rated operational voltage AC (IEC) 230/400 V AC
Rated operational voltage DC 60 V DC
Rated frequency 50/60 Hz
Rated insulation voltage Ui 440 V
Rated impulse withstand voltage Uimp 4 kV
Short-circuit rating (IEC) 10 kA
Short-circuit rating (UL) 10 kA
Maximum power dissipation per pole 1.07 W
Electrical life 10,000 cycles
Mechanical life 20,000 cycles
Operating temperature -40 to +70 °C
Storage temperature -40 to +80 °C
Maximum altitude 2000 m
Conductor section 1–35 mm²
Conductor size 14–6 AWG
Terminal tightening torque 1.8–2 Nm
Terminal tool PZ2
Protection rating IP20 from front
Pollution degree 2
Mounting type 35 mm DIN rail
Normal operating position Vertical plane
Weight 133 g
EAN 8013975220474
HS code 85362010
ETIM classification EC000042
Compliance IEC / UL489
Poles 1-pole
Device Type MCB
Trip Curve D curve

Frequently Asked Questions

What is the Lovato P1MBUH1PD01 used for?

The P1MBUH1PD01 is a single-pole miniature circuit breaker designed to provide thermal-magnetic overcurrent and short-circuit protection for industrial electrical circuits, including UL489 branch circuit applications.

What is the current rating of the P1MBUH1PD01?

The Lovato P1MBUH1PD01 has a rated current of 1 A.

What voltage is the Lovato P1MBUH1PD01 rated for?

The P1MBUH1PD01 has a UL rated operational voltage of 277 V AC, an IEC AC operational voltage rating of 230/400 V AC and a DC operational voltage rating of 60 V DC.

What is the breaking capacity of the Lovato P1MBUH1PD01?

The P1MBUH1PD01 has a short-circuit rating of 10 kA under both IEC and UL specifications.

What does the Curve D characteristic of the P1MBUH1PD01 mean?

The Curve D tripping characteristic is intended for circuits that can experience relatively high transient inrush currents, helping reduce unwanted magnetic tripping while maintaining overload and short-circuit protection.

Reliable Protection for Industrial Electrical Systems

Lovato P1 MB miniature circuit breakers provide compact thermal-magnetic protection for industrial electrical systems, combining dependable overload and short-circuit protection with straightforward DIN rail installation and recognised IEC and UL compliance.

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