GUD-110 Signal Twisted-Pair Surge Protective Device, 110V Un, 18 mm Width

Description

The GUD-110 is a GU series signal twisted-pair surge protective device for surge protection of analog and digital signal communication lines. It is the 110V variant of the GU series, with a nominal operating voltage Un of 110V and a maximum continuous operating voltage Uc of 170V. It is installed in series on the protected line, directly ahead of the equipment or system being protected.

Product Overview

The GU series covers nominal operating voltages of 5V, 12V, 24V, 48V and 110V. The GUD-110 is the 110V model, with a voltage protection level Up of ≤500V. Across the series, the nominal discharge current In is 5kA, the maximum discharge current Imax is 10kA, the response time tA is 1ns, and the rated load current IL is 500mA. The device is housed in a 90mm × 62mm × 18mm body with a UL94-V0 flame rating and an IP20 enclosure rating.

Key Features

• Nominal operating voltage Un: 110V; maximum continuous operating voltage Uc: 170V
• Voltage protection level Up: ≤500V
• Nominal discharge current In: 5kA; maximum discharge current Imax: 10kA
• Response time tA: 1ns
• Rated load current IL: 500mA
• Insertion loss: ≤0.5dB/30MHZ
• 35mm DIN rail mounting with screw terminals
• Conductor connection capacity up to 2.5mm²
• UL94-V0 flame-rated housing, IP20 enclosure rating
• Operating temperature range -40℃ to +80℃, relative humidity ≤95%

Technical Specifications

Parameter	Value
Model	GUD-110
Nominal operating voltage Un	110V
Maximum continuous operating voltage Uc	170V
Nominal discharge current In	5kA
Maximum discharge current Imax	10kA
Voltage protection level Up	≤500V
Response time tA	1ns
Rated load current IL	500mA
Insertion loss	≤0.5dB/30MHZ
Mounting	35mm DIN rail
Conductor connection capacity	≤2.5mm²
Terminal type	Screw terminals
Housing flame rating	UL94-V0
Enclosure protection rating	IP20
Temperature and humidity range	-40℃ to +80℃, relative humidity ≤95%
Altitude	≤3000m
Body dimensions	90mm × 62mm × 18mm

Applications

The GU series signal twisted-pair surge protective device is intended for surge protection of analog and digital signal communication lines. The GUD-110 variant is used where the signal line operates at a nominal voltage of 110V.

Installation and Use

Install the device directly ahead of the equipment or system being protected, as close to that equipment or system as possible. The device can be connected in series as shown in the wiring diagram. For better protection performance, keep the grounding conductor as short as possible, with a total length controlled within 0.5m.

Use 1–2.5mm² multi-strand copper conductors for the connection wiring. The “IN” terminal is the incoming line end and the “OUT” terminal connects to the protected equipment or system. The two line sections must be routed separately and must not be bundled together, to prevent secondary induction.

When installed within the specified conditions, the device does not require long-term maintenance beyond routine system maintenance. If a signal transmission problem occurs and normal transmission resumes after the surge protective device is replaced, the device has been damaged and needs repair or replacement.

Frequently Asked Questions

What is the nominal operating voltage of the GUD-110?

The GUD-110 has a nominal operating voltage Un of 110V and a maximum continuous operating voltage Uc of 170V.

What is the voltage protection level of the GUD-110?

The voltage protection level Up of the GUD-110 is ≤500V.

How is the GUD-110 mounted?

It mounts on a 35mm DIN rail and uses screw terminals for conductors up to 2.5mm².

How should the grounding conductor be routed?

Keep the grounding conductor as short as possible, with a total length controlled within 0.5m, and route the IN and OUT line sections separately without bundling them together.