Lewden SRG1VCU-RM Steel Retrofit Type 2-3 Surge Protection Unit TN-C-S (PME) / TN-S / TT Height: 250mm - Width: 135mm - Depth: 87mm

SRG1VCU-RM is a single phase type 2 surge arrester assembly, for use on TN-C-S (PME) / TN-S / & TT networks. It is designed for retro-fiIng application, to provide protecon of electrical appliances against impulse surges, where it is not possible to accommodate a suitable surge arrester directly within the existing consumer unit.

This product can be installed at the origin of a residential installation, only where there is little or no risk from direct lightning strike (as determined by the risk assessment calculation within BS7671:2018 443.5). It is primarily suited to installations located in an urban area, without an external lightning protection system, and fed from an underground power source. It is not suitable for buildings fed directly from overhead power lines.

SRG1VCU-RM provides protection against the effects of transient over voltages, generated by the switching of equipment; either from within the installation, or from the electrical distribution network when power is switched or re-established by the utility company following a substation outage or distribution network fault.

Type 2 surge arresters cannot provide adequate protection against the effects of a transient over voltage caused by a direct lightning strike on an installation, but do offer protection against the secondary effects of an indirect lightning strike.

Features

• Suitable for TN-C / TN-S and TT network systems
• Designed for universal application, for the protection of electrical appliances against impulse surge eects when connected to LV supply systems
• Devices are earth leakage free and may be connected before or after RCCB / RCBO circuit protection
• Complete with 100A DP Main Switch, 32A Single Pole B Curve MCB, connection cables and enclosure

Technical Specification

Reference standard: IEC/ EN61643-11
Test class according to EN61643-11: Type 2
Nominal Voltage (Un): 230-240V ac
Max continuous operating voltage (Uc): 275V ac
Nominal discharge current (In) (8/20µS): 5kA (L/N, L/PE) 20kA (N/PE)
Voltage protection level at Uoc (Up): <1.5kV (L/N) <1.5kV (L/PE) <1.5kV (N/PE)
Temporary overvoltage (TOV): 335V/5S (L/N) 1200V+Uo/ 0.2S (L/PE)
Response time: <25nS (L/N) <100nS (L/PE, N/PE)
Min-Max conductor size: 6-25mm²
Cable connecting length (maximum): 500mm total or less
Terminal tightening torque: Surge protector :1.2-1.5Nm L/N 2.0-2.5Nm PE
Terminal tightening torque: Main switch & MCB: 2.5Nm
Ingress protection rating: IP20
Overall dimensions (mm): 250H x 135W x 88D
Upstream cut out fuse rating: 50-100A

Alarm Output	N
Status Indicator	Y
Plug-in Module	Y
Surge Protector Type	Type 2 + Type 3
Maximum Cable Size	35 mm2
Nominal Voltage	230VAC V
Nominal Discharge Current	20 kA
Maximum Discharge Current	50 kA
Supply Frequency	50-60 Hz
Minimum Cable Size	1.5 mm2
Product	Surge Protection Device
Type	Type 2/3
Ingress Protection	IP2X
Colour	Light Grey RAL 7035
Unit Weight	1.929 kg
Pole Configuration	Double Pole (2P)
Material	Steel
Width	134 mm
Depth	87 mm
Standards	IEC 61643-11:2011 EN 61643-11:2012 EN 61439-1:2011 EN 61439-2:2011
Qualifier	c/w enclsure Switch Disconnector & MCB
Ce Approved	Y
Number Of Poles	Double Pole (2P)
Mounting Type	Surface
Height	250 mm
Number Of Modules	5
Voltage Type	AC

Delivery Costs

Our standard delivery charge to UK mainland addresses is £5.90 ex-VAT.

Take advantage of FREE* Delivery when you spend over £100 (per order) ex-VAT.

*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12.00 ex-VAT.

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**£180 ex VAT to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes.

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