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.

MultiGuard Surge Protector 1.8m lead, 5 Schuko Sockets & Switch

Home / Voltage Protection / Voltsafe / Single Phase: Plug/Socket – T3 / MultiGuard MGX-5SP – Surge Protector, 1.8m Extension Lead, 5 Schuko Sockets With Power Switch

Description

Spikes/surges are common in every house, office and building. The intensity varies and you never know when that killer spike will occur. Even milder spikes will gradually degrade the reliability of your equipment by repeatedly blowing microscopic holes in electronic circuitry until the equipment is rendered unreliable or non-functional. Data is particularly at risk. The Sollatek MultiGuard is a high quality 5 way strip that provides full surge/spike protection at an affordable price. The MultiGuard is available in different models.

Specification

Name	MGX-5SP
Stock Ref	92642102
Description	Multiguard MGX, 5 Way Schuko Switch, 230V
Socket	Schuko
Plug	Schuko
Sockets	5
Nominal Voltage	230V
Current Rating	16 Amps
MOV	1x20KD511
kA/Joules	6.5KA/220J
Switch	Yes
Cable	1.8m
Enclosure	MGX
M-S	No
USB	No

Model	Barcode
Multiguard MGX-5SP, 5Way Schuko + Switch	5060037800511

Downloads
Brochures
- Voltsafe Suppressor Brochure (3MB)
- Voltage Protection Catalogue 2025 – English (30 MB)
- Voltsafe Multiguard Poster A3 (473KB)
Datasheets
- MultiGuard Range Datasheet (687kB)
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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