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Service Entrance Suppressor(P), 40 kA

The nVent ERICO SES40P Series of Surge Protective Devices (SPD) provide economical protection against damaging transients and surge events. These Type 1 devices are UL® Listed to UL 1449 Edition 4 and cUL® Listed to CAN/CSA C233.1. This allows installations on the line or load side (Type 1 or Type 2) of the service panel in accordance with the NEC® 2014 or CAN/CSA C233.1 without the requirement for additional circuit breakers or fuses. Primary applications are service entrance, branch, commercial, industrial, and residential. Other applications include OEM panels, solar combiner boxes, UL 96A lightning protection installations and light pole applications. The housing is constructed of UV-stabilized thermoplastic and meets the UL 50 Type 4x rating, making it ideal for both indoor and outdoor applications. All of the models have a 20kA nominal discharge current rating, the highest level recognized under the UL 1449 Edition 4 standard.


  • Compact design can be directly mounted to panel or installed in a small space
  • Front-facing design eases installation and performance monitoring
  • 40 kA 8/20 μs maximum surge rating per mode
  • UL® 50 Type 4X
  • Optional Flush Mounting Plate


Part Number SES40P120/240SP SES40P1201P SES40P2083P SES40P2401P SES40P4803P
Nominal System Voltage (Un) 120/240 VAC 120 VAC 120/208 VAC 240 VAC 277/480 VAC
Distribution System 1Ph 2W+G 3Ph 4W+G
3PhΔ 3W+G
1Ph 2W+G 3Ph 4W+G
3PhΔ 3W+G
Max Continuous Operating Voltage (Uc) 150/300 VAC 150 VAC 150/300 VAC 300 VAC 340/590 VAC
Frequency 0 – 100 Hz
Short Circuit Current Rating (SCCR) 200 kA
Nominal Discharge Current (In), Per Mode 20 kA 8/20 μs
Max Discharge Current (Imax), Per Mode 40 kA 8/20 μs
Voltage Protection Rating (VPR), L-L 1,800 V 1,800 V 2,500 V
Voltage Protection Rating (VPR), L-N 900 V 1,800 V 900 V 2,500 V 1,500 V
Voltage Protection Rating (VPR), L-PE 900 V 1,800 V 1,500 V 2,500 V
Voltage Protection Rating (VPR), N-PE 900 V 1,200 V 1,500 V
Status Indication Blue LED
Technology MOV with thermal disconnect
Lead Length 36"
Lead Size #12
Temperature -40 to 176 °F
Enclosure Material UL® 94V-0 Thermoplastic
Enclosure Rating NEMA®-4X
IP 65
Mounting 1/2” straight nipple
Unit Weight 0.55 lb 0.85 lb 0.55 lb 0.85 lb
Certification Details UL® 1449 Edition 4 Type 1/2, 20 kA Mode
Complies With ANSI®/IEEE® C62.41.2-2002 Cat A, Cat B, Cat C
Depth (D) 3"
Height (H) 2 3/4"
Width (W) 4 3/4"

nVent, nVent CADDY, nVent ERICO, nVent ERIFLEX, and nVent LENTON are owned by nVent or its global affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without prior notice.

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IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc.
NEC is a registered trademark of, and National Electrical Code (NEC) standard is a copyright of the National Fire Protection Association, Inc.
NEMA is a registered service mark of National Electrical Manufacturers Association.
UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.



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1.94 MB English


cUL VZCA7.E325047
CSA C22.2 No. 8 + 42 + Elect Not No. 516, CAN/CSA
UL VZCA.E325047
ANSI/UL 1449


Instruction Sheets