GBV-80-385-3+1-FM-27 AC Power Surge Protective Device, 3+1 Configuration, 80kA Imax

Description

The GBV-80-385-3+1-FM-27 is a Type II (Class II) surge protective device (SPD) designed for lightning overvoltage protection of three-phase AC power systems. It is intended for installation at the second stage (Class B) of a power distribution system to protect downstream load equipment from surge events.

Product Overview

The GBV-80-385-3+1-FM-27 is a 3+1 configuration AC power SPD. It provides protection between line and neutral (L-N) conductors and between neutral and protective earth (N-PE). The device uses a 35mm DIN rail mounting system and includes a status indicator window that shows white during normal operation and red when the SPD has failed. A remote signaling changeover contact (NC-COM) is provided for remote status monitoring.

Key Features

• Type II (Class II) surge protection for three-phase AC power systems
• 3+1 configuration: L-N and N-PE protection paths
• Nominal discharge current In: 40kA (8/20µs)
• Maximum discharge current Imax: 80kA (8/20µs)
• L-N voltage protection level Up: 2.5kV at In (8/20µs)
• N-PE voltage protection level Up: 1.8kV at In (8/20µs)
• L-N response time tA: 25ns
• N-PE response time tA: 100ns
• Status indicator: white = normal, red = failed
• Remote signaling changeover contact (NC-COM, normally closed)
• 35mm DIN rail mounting
• Housing material fire rating: UL94-V0
• Housing protection degree: IP20

Technical Specifications

Parameter	Value
SPD classification	II
Nominal operating voltage Un	220VAC
L-N maximum continuous operating voltage Uc	385VAC
N-PE maximum continuous operating voltage Uc	255VAC
Nominal discharge current In	40kA
Maximum discharge current Imax	80kA
L-N voltage protection level Up (In @ 8/20µs)	2.5kV
N-PE voltage protection level Up (In @ 8/20µs)	1.8kV
L-N response time tA	25ns
N-PE response time tA	100ns
L-N, N-PE status indication	White: normal / Red: failed
Mounting method	35mm DIN rail
Conductor connection capacity	≤35mm²
Maximum torque	3.5Nm~4.5Nm
Housing material fire rating	UL94-V0
Housing protection degree	IP20
Remote signaling contact type	Changeover contact, NC-COM normally closed
Remote signaling contact AC rating	250V/0.5A
Remote signaling contact DC rating	125V/0.2A
Remote signaling contact terminal conductor capacity	≤1.5mm²
Temperature (humidity) range	-40℃ to +80℃, relative humidity ≤95%
Altitude	≤3000m
Main body dimensions	90mm×65mm×108mm

Applications

The GBV-80-385-3+1-FM-27 is used for lightning overvoltage protection of three-phase AC power systems. It is suitable for installation at the second stage (Class B) of a power distribution system to protect load equipment from surge events. Typical installation locations include distribution cabinets and switch boxes.

Installation and Use

The SPD can be installed in LPZ0B zones or directly inside distribution cabinets (switch boxes). It mounts on a 35mm electrical DIN rail.

The device is connected in parallel to the power line. The L/+ terminal connects to the phase conductor or positive line, and the N/- terminal connects to the neutral conductor or negative line. The PE terminal must be connected to the lightning protection earth. The SPD should be connected using the shortest possible conductor length; when using direct parallel connection, the total length should be controlled within 0.5m.

Connecting conductors should be multi-strand copper conductors of 16-35mm². The SPD must be preceded by a suitable air circuit breaker or fuse. For the air circuit breaker, use C trip characteristic. A backup fuse of 63Agl/gG is specified.

Power must be disconnected during installation. Live operation is strictly prohibited. Connecting conductors must meet the requirements.

During normal operation, the status indicator window is white and the alarm dry contact NC-COM is in the conducting state. When the SPD fails, the status indicator turns red and the NC-COM contact becomes open.

The SPD requires no special maintenance; only regular checks of module tightness and status indication are needed. If the status indicator turns red or the alarm dry contact becomes open, the SPD has failed and should be replaced promptly.

Frequently Asked Questions

What does the status indicator window show?

The status indicator window shows white during normal operation and red when the SPD has failed. When the indicator turns red, the NC-COM remote signaling contact changes from conducting to open.

What conductor size is required for connection?

Connecting conductors should be multi-strand copper conductors of 16-35mm². The conductor connection capacity is ≤35mm², and the remote signaling contact terminal capacity is ≤1.5mm².

What is the maximum torque for terminal connections?

The maximum torque is 3.5Nm~4.5Nm.

What backup protection is required upstream?

A suitable air circuit breaker or fuse must be installed upstream of the SPD. For the air circuit breaker, use C trip characteristic. A backup fuse of 63Agl/gG is specified.