is this genuine stamford or is it a replacement

Hi ChristopherThis is a generic reoplacement that carries a 1 year warranty. We also have the original available at our Amazon store.Ed

Quiero saber si es buen producto y si lo recomiendan

Hasta el momento funciona a la perfección. Y salvo problemas de fabricación como cualquier producto electrónico es recomendable

do you have a wiring diagram for converting from 350-28700 avr to the as440 avr?

If you are going to use the AS440, you won't be connecting P2,P3&P4, for the PMG. They will need to be safely isolated and taped off. 7 &8 are your voltage sensing wires, may also be labeled 2& 3, go on the terminals marked as such. The exciter wires are x and xx and go on the terminals marked as such. All the markings are on the back side of the regulator. Don't forget to set the jumpers for you correct Hz and pole arrangement. This is also shown on the paperwork sent with the regulator.

My as 440 has a transformer on it, this one does not appear to. what is the diference?

First make certain it is the same model. Second,the transformer may have been replaced with other components. None of the replacement AS440 have a transformer.

Thunder Parts Avr As440 Generic Replacement For Cummins As440 Automatic

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Description

⚡ Power up with precision – never settle for less!

TRUSTED DURABILITY - Backed by a 2-year warranty, engineered for long-lasting reliability.
RELIABLE CURRENT OUTPUT - Continuous 4A current with 15Ω resistance ensures consistent energy flow.
PRECISION VOLTAGE CONTROL - Maintain stable power with ±1.0% regulation for flawless performance.
SEAMLESS CUMMINS REPLACEMENT - Generic fit designed to perfectly replace Cummins AS440 AVR without compromise.
VERSATILE INPUT COMPATIBILITY - Easily switch between 100-130V or 190-264V single-phase inputs to fit your setup.

The Thunder Parts AVR AS440 is a high-performance automatic voltage regulator designed as a generic replacement for the Cummins AS440. It features selectable input voltages (100-130V or 190-264V), precise ±1.0% voltage regulation, and a continuous 4A current output with 15Ω resistance. Engineered for reliability, it comes with a 2-year warranty, making it a dependable choice for maintaining stable power in your vehicle or watercraft alternator system.

Specifications

ASIN	B01IDRW0MM
Best Sellers Rank	#272,754 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,171 in Power Converters
Customer Reviews	4.1 4.1 out of 5 stars (19)
Date First Available	July 13, 2016
Item Weight	12 ounces
Item model number	AS440 AVR
Manufacturer	Thunder Parts
Package Dimensions	6.4 x 4.6 x 2.4 inches

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HK$572

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Thunder Parts | AVR AS440 | Generic Replacement for Cummins AS440 Automatic Voltage Regulator | 2 Year Warranty

Description

Specifications

Common Questions