Surge Protection Devices

Class B+C Power Surge Protector LP-40B+C

Model LP-40B+C

LP-40B+C power surge protector for building low-voltage main distribution boxes: plug-in modules for class B and C lightning overvoltage, 40 kA nominal and 80 kA maximum discharge current, status lights and optional remote signalling.

Overview

About the Class B+C Power Surge Protector LP-40B+C.

The LP-40B+C power surge protector is a plug-in surge protective device for equipotential bonding in building low-voltage main distribution boxes. It protects the installation against overvoltage arising from lightning strikes at power class B and C. It handles a nominal discharge current of 40 kA and a maximum of 80 kA (8/20 µs). Built-in temperature control and circuit-breaking technology give high safety performance, and an indicator shows green when the module is normal and red when it is broken and needs replacing.

Features

  • Plug-and-play modules that can be replaced live, with no need to consider the load current
  • Built-in temperature control and circuit breaking technology for safe operation
  • Green light for normal, red light for a failed module that needs replacing
  • Lightning protection back-up: half of the protection remains available when either red light is on
  • Optional telesignalisation interface for remote monitoring
  • Combination assemblies such as 1P+N, 2P, 3P+N and 4P for different supply networks
  • Response time below 25 ns
  • Flame-retardant reinforced nylon housing (UL94 V-0)

Applications

  • Building low-voltage main distribution boxes
  • Power class B and C surge protection
  • Equipotential bonding of low-voltage electrical networks

Models

  • Three voltage ratings by maximum continuous operating voltage: 275 V, 385 V and 690 V AC
  • Voltage protection level below 2.2 kV, 2.4 kV and 3.0 kV respectively
  • Assemblies of 1P+N, 2P, 3P+N or 4P modules; wiring diagrams are given for 3P and 4P

LKS supplies the LP-40B+C power surge protector in Malaysia, with installation and after-sales support. Contact our engineers for selection and a quotation.

  • Surge protection
  • Lightning protection
  • Remote monitoring

Specifications

ModelLP-40B+C
Protection classPower class B & C
Maximum continuous operating voltage Uc275 / 385 / 690 V AC
Voltage protection level Up< 2.2 / < 2.4 / < 3.0 kV
Voltage limiting Ures (at 5 kA)< 1.0 / < 1.2 / < 2.0 kV
Nominal discharge current (8/20 µs)40 kA
Maximum discharge current (8/20 µs)80 kA
Impulse discharge current Iimp (10/350)1.5 kA
Response time< 25 ns
Housing materialFlame-retardant reinforced nylon (UL94 V-0)
Recommended grounding conductor16 mm² multi-strand flexible wire
Maximum back-up protection fuse125 AgL / 63 A
Configurations1P+N, 2P, 3P+N, 4P and others
Remote signallingOptional telesignalisation monitoring interface

Lifecycle support

Installed, calibrated and maintained.

With more than two decades in valves and instrumentation across a diverse range of industries, we keep instruments accurate and valves healthy, because valve health management is vital for plant safety.

  • Installation & commissioning
  • Calibration & testing
  • Maintenance & overhaul
  • Dismantling & replacement

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