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Component: PolySwitch 420 - 4.2Amp limit @ 20'C

Your Price: $1.09
In Stock

Product ID # 2591
Part Number:

Quantity Discounts

5 to 20$1.06
21 to 50$1.04
51 to 100$1.01
101 or more$0.98
  • This is polyswitch max current is 4.2A @ 20'C.
  • Agency Recognizations: UL (PS300), TUV, CSA
  • PolySwitch devices are used to help protect against harmful over current surges.
  • Like traditional fuses, these devices limit the flow of dangerously high current during fault conditions.
  • The polySwitch device, however, resets after the fault is cleared and power to the circuit is removed, thereby reducing warranty, service and repair costs.
  • The polyswitch shall be welded or soldered between two cells in one battery pack
  • Max Dimension (LxWxH): 32.4mm (1.28") x 13.6mm(0.54") x 1.1mm(0.4")
  •  Please click here to download specification
  • Manufacture part# SRP420F
  • Current Rating: 4.20A
  • Max Resistance: 40 milli-ohms @20'C
  • Holding Current: 4.2A  @ 20'C
  • Tripping current: 7.6A @ 20'C
    • Tripping current is the maximum current for open up the circuit
  • Max Operating Temperature: 60'C (Holding current = 3.0A) 
    • Note: The Percent of rated hold and trip current will be reduced if the temperature increase
  • Lead Free Status: Contains Lead
  • Mounting Type: Surface Mount
Thermal Derating Chart (B = SRP Type)

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Product Reviews

(1 Rating, 1 Review) Average Rating:
battery related items of any one I have found
nwbobber (Longview, WA) 6/29/2012 3:14 PM
I ordered a battery pack for my dive light, recieved it promptly, everything is just as I ordered it. They have the broadest selection of battery related items of any one I have found, and a lot of great information on the website. The website could use a going over by someone more proficient in english grammar though. Good experience, overall.

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