About the DC Surge Arrestor

The DC Surge Arrestor is part of the ELEHPD Surge Arrester range. DC Surge protective device (Surge Arrestor) Technical Parameters DC Suger Protective Device GC 110 GD 110 GC 48 GD 48 GC 24 GD 24 GF 110 GF 48 GF 24 Operating voltage Un DC110V DC48V DC24V DC 110V DC 48V DC24V Maximum continuous Operating voltage Uc DC150V DC60V DC30V DC 150V DC 60V DC 30V Voltage limiting Up(10/700 µ s) ≤ 500V ≤ 200V ≤ 120V ≤ 500V ≤ 200V ≤ 120V Nominal discharge curren ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.

Typical applications

Consumer units and distribution boards in residential buildings
Commercial and retail fit-outs where selective protection is required
Industrial control panels and machine-builder assemblies
Solar PV, EV charger and battery-storage sub-circuits
OEM equipment where a DIN-rail protective device is specified

How to specify the right Surge Arrester

Match the rated current to the circuit design current, then check the cable ampacity
Pick the trip curve to the load: B for resistive/lighting, C for general mixed loads, D for motors and transformers
Confirm the breaking capacity meets the prospective short-circuit current at the point of installation
Verify the pole configuration (1P, 1P+N, 2P, 3P, 3P+N, 4P) against the system earthing arrangement

Specifications

DC Surge protective device (Surge Arrestor)

Q: What is the difference between an MCB and an MCCB?

An MCB (miniature circuit breaker) is a DIN-rail device for final circuits, typically rated up to 125 A with a fixed trip curve. An MCCB (moulded case circuit breaker) is a larger device for main and sub-main distribution, usually 16 A to 1600 A, with adjustable thermal and magnetic settings and a higher breaking capacity. Use an MCB for branch circuits and an MCCB where you need adjustability or higher fault ratings.

Q: How do I choose between a Type B, C and D trip curve?

Type B trips between 3 and 5 times rated current and suits resistive loads such as lighting and heaters. Type C trips between 5 and 10 times and is the general-purpose choice for socket circuits and mixed loads. Type D trips between 10 and 20 times and is used for loads with high inrush, such as motors, transformers and large LED drivers.

Q: What does 6 kA breaking capacity mean in practice?

It is the maximum prospective short-circuit current the device can safely interrupt. 6 kA covers most domestic and light commercial installations. Where the transformer is close and the fault level is higher, specify 10 kA devices so the breaker still clears the fault without damage.

Q: Can these devices be supplied with your own brand?

Yes. OEM branding, buyer-specific labels, custom carton print and private-model numbering can be arranged on qualified order volumes.

Technical Parameters

	DC Suger Protective Device
GC 110	GD 110	GC 48	GD 48	GC 24	GD 24	GF 110	GF 48	GF 24
Operating voltage Un	DC110V	DC48V	DC24V	DC 110V	DC 48V	DC24V
Maximum continuous Operating voltage Uc	DC150V	DC60V	DC30V	DC 150V	DC 60V	DC 30V
Voltage limiting Up(10/700 µ s)	≤ 500V	≤ 200V	≤ 120V	≤ 500V	≤ 200V	≤ 120V
Nominal discharge current In(8/20 µ s) kA	10kA
Impulse protective voltage Ur(1kV/ µ s)	≤ 600V
Frequency range	2M Hz	10MHz	2M Hz	10MHz	2M Hz	10MHz	100MHz
Insertion loss	<0.5db	<3db
Interface form	Connector
Protective feet	1.2
Protective way	Full protective mode
Response time	<10 ns

Introduction

This type SPD, using the connector method, is available with lots of return circuit, such as signal return circuit, 4 return circuits, 8 return circuits, 12 return circuits, 16 return circuits and 24 return circuits. It is suitable to communication, computer and self-controlling fire warning system and protecting the network shocked by thunder or surge over voltage.

Electric Principle Picture

Usage and Installation

It is used in the telephone-machine, fax-machine, DDN, ISDN special line, computer interface, remote signal line and the defence thunder protective device on the self-controlling line.

The meticulous design enables convenient installation.

The device which is fixed by 35 mm electric rail is connected to the input return circuit of the equipment. The equipment with many return circuits should adopt several group installation, and also can choose XXL-JZ series signal defence thunder case. After its installation, well earthing should be paid attention.

Bounding installation: Bounding installation with many return circuit can installed SPD compactly according to the need of user.

Frequently asked questions about the DC Surge Arrestor

What is the difference between an MCB and an MCCB?

An MCB (miniature circuit breaker) is a DIN-rail device for final circuits, typically rated up to 125 A with a fixed trip curve. An MCCB (moulded case circuit breaker) is a larger device for main and sub-main distribution, usually 16 A to 1600 A, with adjustable thermal and magnetic settings and a higher breaking capacity. Use an MCB for branch circuits and an MCCB where you need adjustability or higher fault ratings.

How do I choose between a Type B, C and D trip curve?

Type B trips between 3 and 5 times rated current and suits resistive loads such as lighting and heaters. Type C trips between 5 and 10 times and is the general-purpose choice for socket circuits and mixed loads. Type D trips between 10 and 20 times and is used for loads with high inrush, such as motors, transformers and large LED drivers.

What does 6 kA breaking capacity mean in practice?

It is the maximum prospective short-circuit current the device can safely interrupt. 6 kA covers most domestic and light commercial installations. Where the transformer is close and the fault level is higher, specify 10 kA devices so the breaker still clears the fault without damage.

Can these devices be supplied with your own brand?

Yes. OEM branding, buyer-specific labels, custom carton print and private-model numbering can be arranged on qualified order volumes.