The LT-253-400 series pulse-width modulated AC to DC converters provide regulated DC power from an unregulated 115 VAC, 400 Hz power source. The DC output can be adjusted via remote control potentiometer or voltage for voltage controlled models. these power converters are primarily designed to control incandescent lights in aircraft lighting systems.
This regulated AC to DC power converter (Alternate Part# LT-253-400) has:
- 100 watt maximum power rating
- 105 VAC – 125 VAC input voltage
- 1.6 amp RMS @ 115 VAC
- 0 – 5 DC output voltage
- 0 – 20 ADC output current
Features:
- State of the art over voltage protection
- A panel mount trim pot provides voltage control
- Output voltage is monitored via a test jack
- Meets MIL-STD 704 notice 3, MIL-STD-202 and MIL-T-5422F class 1A standards
Product Codes | |
|---|---|
| Mfr Part No: | LT-253-400 |
Dimensions: 6.5 x 6.7 x 2.4 in (16.5 x 17 x 6 cm)Weight: 3.6 lb (1634 grams)Input Voltage: 115VAC ±10% @ 400 HzOutput Voltage: Adjustable with external 5KΩ, 1/2 watt rheostat or voltage 0–3 VDC to 0–5 VDCRegulation: 2% for line, 2% load and 2% temperatureOutput Ripple: 25 mVp-p or lessProtection (Overload): Input and output currents pulse when overload exceeds approximately 125% of ratingProtection (Overvoltage): Output voltage is limited to approximately 125% of rating even though remote control rheostat opens or internal failure occursTemperature: -55°C to 71°C (sufficient cooling required @ +71°C ambient)Altitude: 55,000 ft
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: LT-253-400
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Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
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