TS420

Emergency Power Supply

The TS420 Emergency Power Supply simultaneously provides one primary power output and three lighting power outputs. Pitot/Static ports or optional electrical input provides the ability to work in automatic mode without pilot intervention. Buy Now

Features

Provides 18 volts of rechargeable power for Mid-Continent products, lighting or critical avionics
Arms at the beginning of flight, recharges during flight, activates instantly upon power loss and turns off after flight
Powers LED or incandescent lighting at 5, 14 or 28 VDC
Remote, mini-annunciation switch controls test and manual operations
Field-replaceable battery modules
Quality Mil-Spec connectors included
Designed and built in Wichita, Kansas USA
Two-year limited warranty
FAA TSO Certified

Specifications
Downloads

Specifications

Model Number	TS420
Part Number	MD420
National Stock Numbers (NSN)	6130-01-564-7588
Capacity	1.0 Ah (0.05C) at 25°C
Input Power	10 – 32 VDC, 0.25A nominal, 4.0A max (14 VDC) / 2.0A max (28 VDC)
Output Power	18 VDC nominal, 1.6 amps max
Weight	3.2 lbs
Dimensions	3.35” H x 6.75” L x 3.38” W
Maintenance	Annual capacity check Field-replaceable batteries
Mating Connectors	25-pin female D-Sub (MD25F20JVL0 or equivalent) — battery control unit 9-pin female D-Sub (MD9F20JVL0 or equivalent) — annunciator
Remote Test Switch	Remote, mini-annunciation switch controls test and manual operations
Annunciator Lighting	LED backlighting, automatic internal dimming
Battery Charging	Automatic recharging when main power is present
Compatibility	Provides 60 minutes or more of backup power to Mid-Continent’s Electric Attitude Indicator Model 4200 or 4300 and lighting power for two additional instruments (5, 14 or 28V) Battery run time will vary depending on total power load and battery charge status
Certification	FAA TSO-C4c certified RTCA DO-160E qualified

Downloads

Fliers
TS420 Product Flier

Installation Manual
IM 9016391

Technical Drawings
OL MD420
OL MD420-1

Service Bulletins
SB MD421-01