SES40P4803P 40 kA 277/480 VAC DC Non Metallic Enclosed


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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 SES40P4803P
Nominal System Voltage (Un) 277/480 VAC
Distribution System 3Ph 4W+G
3PhΔ 3W+G
Max Continuous Operating Voltage (Uc) 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 2,500 V
Voltage Protection Rating (VPR), L-N 1,500 V
Voltage Protection Rating (VPR), L-PE 2,500 V
Voltage Protection Rating (VPR), N-PE 1,500 V
Status Indication Blue LED
Technology MOV with thermal disconnect
Lead Length 914 mm
Lead Size 3.31 mm²
Temperature -40 to 80 °C
Enclosure Material UL® 94V-0 Thermoplastic
Enclosure Rating NEMA®-4X
IP 65
Mounting 1/2” straight nipple
Unit Weight 0.385 kg
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) 76.2 mm
Height (H) 69.85 mm
Width (W) 120.65 mm
Certifications cULus
Standard Packaging Quantity 1 pc
UPC 78285685913


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