Intermatic - H20S21S1DG2 - Surge Protective Device, 7-Mode, 120-240 VAC 1Phase, Type 2

IntermaticSKU: H20S21S1DG2

Sale price $984.32
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Spec Sheet  Install Manual

Intermatic PANELGUARD® Surge Protective Devices are designed to react quickly and eliminate surges providing optimal protection to downstream equipment. PANELGUARD Industrial/Commercial-grade series are Parallel Connected Surge Protective Devices designed to protect all types of loads fed from individual disconnects, sub-panels, distribution panels and service entrance locations.


  • Type 2 surge protection
  • Optional audible alarm and dry relay contacts
  • 7 Modes of protection
  • NFPA 780, UL 96A Lightning system protection compliant
  • NEMA 4X enclosure for indoor or outdoor installation
  • Individually integrated disconnect TPMOV surge protection technology
  • Optional advanced electrical noise filter (UL 1283)
  • Blue LED status indicator per phase, red LED service indicator


  • Distribution Panel
  • Service Entrance


Color Gray Modes of Protection 7
Surge Protection Type 2 Enclosure Type NEMA Type 4X
Surge Protection Technology Individually integrated thermal disconnect technology TPMOV Voltage 120/240 VAC Single-Phase
Filter EMI/RFI Filter Warranty Period 10-Year limited
Has LED Remote Contact Audible Alarm Yes Maximum Surge Current Rating Per Phase 200 kA
AC Sinewave Tracking (EMI/RFI) Level Sinewave tracking (EMI/RFI) level is up to 54? dB? from 2 kHz to 100 MHz Conduit Size 3/4"
Diagnostics Indicator Audible Alarm Indicator, Blue LED Status Indicator Per Phase, Form C Dry Relay Contacts, Red LED Service Indicator Maximum Continuous Operating Voltage (L-G) 150
Maximum Continuous Operating Voltage (L-L) 300 Maximum Continuous Operating Voltage (L-N) 150
Maximum Continuous Operating Voltage (N-G) 150 Maximum Surge Current Rating Per Mode 100 kA
Nominal Discharge Current 20 kA RoHS Certification Yes
Short Circuit Current Rating 200 kA Surge Protection LED Indicator Yes
Voltage Protection Rating (L-G) 700 Voltage Protection Rating (L-L) 1200
Voltage Protection Rating (L-N) 700 Voltage Protection Rating (N-G) 700
Wire Size Max #10 AWG Operating Temperature Max (°C) 80
Operating Temperature Max (°F) 176 Operating Temperature Min (°C) -40
Operating Temperature Min (°F) -40 Product Depth (in) 3.29
Product Depth (mm) 83.57 Product Height (in) 10.59
Product Height (mm) 268.99 Product Width (in) 5.25
Product Width (mm) 133.35 Unit Carton Height (in) 4.375
Unit Carton Length (in) 12.625 Unit Carton Weight (lb) 0.6
Unit Carton Width (in) 6.375

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