Siemens Ca FS140 FirstSurge,140kA,1
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Manufacturer Siemens
Mfg Catalog # FS140
North Coast Part # 1163461


  • When there is a problem, Siemens FirstSurge takes the guesswork out of knowing when it is time to be replaced; an audible alarm beeps, the green LED lights on the device will extinguish and the red service light will flash
  • FirstSurge is equipped with ground reference monitoring notifying you a rare safety hazard exists due to a compromised electrical system neutral to ground bond; in this case an audible alarm will beep, the green LED lights on the device will remain lit, and the red service light will flash
  • FirstSurge pro provides 140,000 Amp of surge current capacity per phase
  • Surge exposure map correlating storm frequency and intensity with increasing FirstSurge capacities; any FirstSurge will protect in all regions, but selecting the recommended surge current capacity increases robustness to ensure lasting protection
  • FirstSurge's balanced 600-Volt protection ratings means every primary paired conductor (line to neutral, line to ground, and neutral to ground) will knock down surge over voltages to safe levels
  • Every FirstSurge electrical AC service protector is equipped with worry free commercial class 3-stage notification; when FirstSurge wears out, its audible alarm will beep, protection status LED/s extinguish, and red service LED flashes
  • When 3-stage notification activates, you turn off FirstSurge dedicated breaker, and you contact your electrician to arrange for installation of replacement unit
  • FirstSurge can be used to surge protect any load center brand when connected to a 30A or less 2 pole circuit breaker
  • Every FirstSurge electrical AC service protector is assigned underwriters laboratories highest robustness nominal discharge current of 20kA
  • FirstSurge is designed to surge protect standard residential split phase 120/240, 60 Hz system voltage


  • Voltage between phase and Ground (GND) rated value: 120 V
  • Voltage between phase and phase rated value: 243 V
  • Supply voltage frequency rated value 50/60 Hz: Yes
  • Phase number: 1
  • Height [in]: 8 in
  • Width [in]: 4 in
  • Depth [in]: 3 in
  • Product brandname: Siemens
  • Product sub brand name: FirstSurge
  • Suitability for operation: Residential


UPC 80476605556
GTiN 00804766055560
Width 4 in
Size 8Lx4Hx3W
Operating Temperature -40 To 60 C
Voltage 120/243 Volt
Terminal Type Wired
Applications For Residential use
Depth 3 in
Height 8 in
Frequency 50/60 Hz
Connection Type Wired
Temperature Rating -40 to 60 C
Family Brand Name Siemens
Number of Phases 1 Phase
TC Connection Wired
Response Time 1 Nanosecond
Blade Dimensions 8 in L x 3 in W x 4 in H
Sub Brand FirstSurge Pro
Nominal Discharge Current 140 kA

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