Does the DSP cause the RCD to trip?

As the DSP surge protection component is MOV type between L-N ,N-E, there may be a very small leakage current from Live to earth caused by the MOV normal operation. The RCD may see this as an imbalance between its live and neutral currents thereby causing the RCD to trip. Suggest fit the DSP before the RCD i.e. on the RCD's input terminal side. DSP is a device that is fitted in parallel across the L-N and earth.

Where should you install a DSP when you have an RCD installed?

Best to put the DSP before the RCD.

DSP Distribution Board Surge Protector

Home / Voltage Protection / Voltsafe / Single Phase: Direct Wiring - T1+T2 / DSP

Description

Mains spike/surge protection Maximum surge current handling capabilities of 20KA per phase with a maximum let through voltage of 750Vac. Ideally suited to the protection of both entire distribution boards and equipment in domestic and industrial environments. Features LED indication of protection status and requires no operator intervention or maintenance. Available in single and three phase versions.

Model Product Code

DSP1P-0 91000200

DSP3P-0 93000200
Specification

Max Surge Current 20kA

Remote Connect No

Terminals 6mm2

Weight 1 Phase: 580gm
3 Phase: 680gm

Dimensions 205 x 135 x 55mm

Model Barcode

DSP1P-0 1Ph Dist Surge Protector 230V 5060037801129
Downloads
Brochures
- DSP Brochure Aug 1998 (112KB)
- Voltsafe Suppressor Brochure July 2014 (3MB)
Click on the question to get the full answer.

Does the DSP cause the RCD to trip?
As the DSP surge protection component is MOV type between L-N ,N-E, there may be a very small leakage current from Live to earth caused by the MOV normal operation. The RCD may see this as an imbalance between its live and neutral currents thereby causing the RCD to trip. Suggest fit the DSP before the RCD i.e. on the RCD's input terminal side. DSP is a device that is fitted in parallel across the L-N and earth.
Where should you install a DSP when you have an RCD installed?
Best to put the DSP before the RCD.
What MCB rating does one use for the Live wire on the DSP-1P?
It uses the B32 rating.
BLOGS

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Did you know that lightning is the single biggest cause of damage to and destruction of electrical and electronic equipment in industrial facilities, commercial buildings, and homes. Due to the ever changing climate and rising temperatures lightning strikes are becoming more and more frequent. This is the remanence of 2 distribution boards that have been […]

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