External Mount Surge Protective Devices

External Mount SPDs

Surgelogic surge protective devices feature a compact design that allow surge suppression to be externally installed adjacent to electrical distribution equipment. Surgelogic systems are designed to provide high-quality surge suppression for a wide variety of commercial, industrial or institutional applications.

US and Canadian UL Listed to the UL 1449 standard. Complies with requirements of NEC Article 285 (2017) and CSA C22.2 No. 269.1 and 269.2, as appropriate. Complies with UL 96A Master Label requirements for Lightning Protection Systems.

Features of Surgelogic surge protective devices:

  • LED light indicates operation status, audible alarm, dry contacts

  • 200 kA SCCR withstand

  • Surgelogic HWA UL Type 2 surge protective devices are designed and listed for indoor or outdoor installation and surge suppression for single-phase and three-phase electrical services up to 600 Vac.

  • EMA units are UL Type 1, indoor rated and comes with a surge counter and fused UL 1283 components

  • EMB units are UL Type 1, suitable for indoor and outdoor applications (UL / NEMA Type 4X rated) UL Type 2 with UL 1283 dual listing available with some configurations with "F" suffix indicated below

  • HWC units are UL Type 2, suitable for indoor and outdoor applications (UL / NEMA Type 4X rated), includes a surge counter and are UL 1283 listed

  • EMD units are UL Type 1, suitable for indoor and outdoor applications (UL / NEMA 4 rated) and come with a disconnect switch, surge counter UL Type 2 with UL 1283 dual listing available with some configurations with "F" suffix indicated below

  • HWL and EML units are UL Type 1 and feature 10 discrete modes of protection

  • Optional flush mount kits:

    • HWA = HWAFM

    • HWB = HWBFM

    • EMA = EMAFM

    • EMB = EMBFM

    • HWC = HWCFM

  • Remote Monitor = TVS12RMU

Enclosed SPDs

Service Voltage

Indoor / Outdoor

Indoor Only Surge Counter

Indoor / Outdoor

Indoor / Outdoor Surge Counter

Indoor / Outdoor Surge Counter, Disconnect Switch

HWA (UL Type 2, UL 1283)

HWB (UL Type 1)

EMA 100 kA

EMA 200 kA

EMB 200 kA

HWC 300 kA

EMD 300 kA

EMD 500 kA

120 / 240 V, one-phase, three-wire + ground [2]

HWA11

HWB11

EMA11

EMA12

EMB12

EMB12F

HWC13

EMD13

EMD13F

208Y / 120 V, three-phase, four-wire + ground [3] [4] [2] Wye

HWA21

HWB21

EMA21

EMA22

EMB22

EMB22F

HWC23

EMD23

EMD23F

EMD25

240 / 120 V, three-phase, four-wire + ground [2] High-leg Delta

HWA31

HWB31

EMA31

EMA32

EMB32

HWC33

EMD33

480Y / 277 V, three-phase, four-wire + ground [4] [5] [2] Wye

HWA41

HWB41

EMA41

EMA42

EMB42

EMB42F

HWC43

EMD43

EMD43F

EMD45

480 V, three-phase, three-wire + ground [6] Delta

HWA51

HWB51

EMA51

EMA52

EMB52

HWC53

EMD53

EMD55

240 V, three-phase, three-wire + ground Delta

HWA61

HWB61

EMA61

EMA62

EMB62

HWC63

EMD63

600Y / 347 V, three-phase, four-wire + ground, [2] [4] WYE

HWA81

HWB81

EMA81

EMA82

EMB82F

HWC83

EMD83F

600 V, three-phase, three-wire + ground [7]

HWA91

HWB91

EMA91

EMA92

EMD93F

Enclosed 10 Discrete Mode SPDs

Service Voltage

Indoor / Outdoor Surge Counter

Indoor / Outdoor Surge Counter, Disconnect Switch

HWL 300 kA

EML 300 kA

120 / 240 V, one-phase, three-wire + ground

HWL13

208Y / 120 V, three-phase, four-wire + ground Wye

HWL23

EML23

480Y / 277 V, three-phase, four-wire + ground Wye

HWL43

EML43

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