Raychem/TE Connectivity RXE065 0.65A Polyswitch

Raychem/TE Connectivity RXE065 0.65A Polyswitch

Brand:| Model: RX
Overview
PolySwitches are resettable fuses which protect against excessive current, voltage, and temperature by interrupting the flow of current. After opening, the PolySwitch will reset only after it has cooled. The PolySwitch requires no manual resetting or replacement.
Part # 
071-256
Weight: 0.0013 lbs.  
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Part # 071-256
Qty:  EA
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Product Details

Raychem/TE Connectivity RXE065 0.65A Polyswitch
PolySwitches are resettable fuses which protect against excessive current, voltage, and temperature by interrupting the flow of current. After opening, the PolySwitch will reset only after it has cooled. The PolySwitch requires no manual resetting or replacement. Very well suited for protecting speakers, power supplies, motors, alarm systems, plus many other applications. Max voltage: 60 volts. Max current: 40 amps.


Raychem/TE Connectivity RXE065 0.65A Polyswitch
  • BrandRaychem
  • ModelRX
  • Part Number071-256
  • UPC844632046896
  • Product CategorySpeaker Protection Devices
  • Unit of MeasureEA
  • Product Rating
    (2 Reviews)
  • Weight0.0013 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Reviews

Raychem/TE Connectivity RXE065 0.65A Polyswitch
Raychem/TE Connectivity RXE065 0.65A Polyswitch is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Only place I could find this part! Fast shipping too!Parts worked great! Was exactly what I needed and only place that had them! Good price too! Thanks!
Date published: 2013-10-27
Rated 5 out of 5 by from Breakers save driversThe Raychem PolySwitches are good addition to speaker systems that might experience excessive power. The breaker will heat up and become a high impedence when the trip current has been exceeded for short period of time. The only issue is that one must put some thought into determining the proper trip current (with timing) that will protect the driver(s). Keep in mind that unlike a standard (fast-acting) fuse, there is a time delay (behavior more like a slow-blow fuse).
Date published: 2013-11-13

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Raychem/TE Connectivity RXE065 0.65A Polyswitch

Speakers handle only 30 watts

Our speakers only handle 30 watts and want to know what size Polyswitch we need to use?
Asked by: Mike S
Depends on your impedance. Ohm's law my friend. Atually its a little more involved than that even. Here's the formula I use:P=30Watts/R=4Ohms =7.5*sqrt =2.7386... this is a DC measurement. Music is wide bandwidth, dynamic AC. Sooo 2.7386... x .707 =1.9361... divided by 50% duty cycle (if you're feeling courageous; 35 to 40% if you want to play it safe) =.968... amps for a 4 ohm speaker. For 8 ohms it would be .684...amps @ 50%. I can't vouch for the perfection of this formula as a circuit protector, but I have built many speakers using this formula to determine my fuses and PTCs and I've never had a failure. Just saying.
Answered by: Matt
Date published: 2012-01-11

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