Circuit Breaker Switch Airpax 3a 50vdc Delay B M39019/01-32 Nasa on 2040-parts.com

My Cat "Killer" approves this item!

This auction is for One AIRPAX AP1 series, Part number M39019/1-32 (020-211-0032) 3 AMP, 50VDC DELAY B, Magnetic Circuit Breaker-Switch.

These are hermetically sealed and have solder tabs.  They were purchased for the NASA SPACEHAB project and never used. The sale price is a fraction of new for these New-Old-Stock (NOS) parts. These are ideal for a custom breaker panel for a home built project or for branch protection of an ancillary device.

I have 4 of these remaining for sale. You are buying a Qty of 1.  Offers will be considered for quantities up to 4.

These are Space Rated and were for the SpaceHab Program. This is good stuff!

Each switch is tested functionally with an Ohm Meter before shipping to ensure that the switch continuity is correct. Returns will be accepted within 14 days for defective items only. No return for damage due to improper handling or installation.  Return postage is responsibility of buyer. These are DC circuit breakers, not for AC household current! Please feel free ask me about your application before buying.

Applications:

These might be good for current limiting 3000 mAH Lithium Ion Battery Packs in various applications. Check your battery specs and load for suitability. DELAY B according to specs will trip instantly at 4 times rated current. So 12A short will trip these right away. A continuous load of 135% (4.05A) will also trip the breaker. These are also good to 50VDC so you can have up to 150W protection. If you have several parallel strings of 3000maH batteries, each string up to 50VDC can be separately protected. If there is a load short, each string will open its own circuit breaker.

These are great for applications where critical equipment requires a fuse, but in actual use a circuit breaker can be a lifesaver as you while can repair a short with a bit of tape if you don't have a replacement fuse your lights, radio, fuel pump or ignition system will leave you stranded. A perfect application would be an off road vehicle. These switches are hermetically sealed so dust and water will not get in nor will they corrode. These use solder terminals so the connection is free from corrosion as well. Since they are hermetically sealed, they will not spark making them safer near batteries and fuel.

Also EMCOMM radio equipment can be protected with these switches. Having a master switch/Circuit breaker eliminates current drain on the battery power and provides protection against wiring faults.

Contact me for complete manufacturers specs if needed.

Feline NOT included!

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