MAINS SURGE PROTECTION PRODUCTS

Mains Surge Protection Devices

Kingsmill Mains SPDs are a coordinated range of high specification protectors.

Features include:

  • Remote signalling
  • Reversible installation
  • Biconnect terminals
  • Locking pluggable modules
  • Optical lifetime status indication

Benefits include:

  • No follow-through current
  • No leakage current
  • Coordinated range (install in close proximity)

Simple Selection

Click below for simple selection of Mains SPDs:

BS EN:62305

BS 7671:2018 (18th Edition Wiring Regulations)

25kA combined Type 1 & 2 lightning current and surge arresters

Discharge current
Earthing system
Poles
Phase
Part number
25kA
TN-S (MDB)
TN-C-S (SDB)
4
3
KM1+2-25-4+0 SC
25kA
TT
4
3
KM1+2-25-3+1 SC
25kA
TN-C / TN-C-S
3
3
KM1+2-25-3+0 SC
25kA
TN-S (MDB)
TN-C-S (SDB)
2
1
KM1+2-25-2+0 SC
25kA
TT
2
1
KM1+2-25-1+1 SC
25kA
TN-C
1
1
KM1+2-25-1+0 SC

12.5kA combined Type 1 & 2 lightning current and surge arresters

Discharge current
Earthing system
Poles
Phase
Part number
12.5kA
TN-S / TN-C-S
4
3
KM1+2-12.5-4+0 SC
12.5kA
TT
4
3
KM1+2-12.5-3+1 SC
12.5kA
TN-C
3
3
KM1+2-12.5-3+0 SC
12.5kA
TN-S / TN-C-S
2
1
KM1+2-12.5-2+0 SC
12.5kA
TT
2
1
KM1+2-12.5-1+1 SC
12.5kA
TN-C
1
1
KM1+2-12.5-1+0 SC

20kA Type 2 surge arresters

Discharge current
Earthing system
Poles
Phase
Part number
20kA
TN-S / TN-C-S
4
3
KM2-20-4+0 SC
20kA
TT
4
3
KM2-20-3+1 SC
20kA
TN-C
3
3
KM2-20-3+0 SC
20kA
TN-S / TN-C-S
2
1
KM2-20-2+0 SC
20kA
TT
2
1
KM2-20-1+1 SC
20kA
TN-C
1
1
KM2-20-1+0 SC

10kA Type 3 surge arresters

Discharge current
Earthing system
Poles
Phase
Part number
10kA
TN-C / TN-S
TN-C-S / TT
4
3
KM3-10-3+1 SC
10kA
TN-C / TN-S
TN-C-S / TT
2
1
KM3-10-1+1 SC

2kA Type 3 surge protection module

Earthing system
Poles
Phase
Part number
TN-C / TN-S / TN-C-S / TT
N/A
1
KM3-275-A