Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
ALTRONIX Power Supply 12/24Dc @ 4A: Power Supply - Power Supply Boards
ALTRONIXPower Supply Boards

ALTRONIX Power Supply 12/24Dc @ 4A: Power Supply

The ALTRONIX AL400ULB is a power supply board that converts a 28V AC input to a 12/24V DC output at 4A. Constructed with a phenolic/fiberglass material, this unit is designed for industrial applications requiring a…

SKU 3G-OTH-501981

Brand
ALTRONIX
Item
Power Supply 12/24Dc @ 4A: Power Supply
Category
Power Supply Boards
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

ALTRONIX
Manufacturer Part Number
AL400ULB
Material
Phenolic/Fiberglass
AC
28V
Product Type
Power Supply
Input Voltage
28V AC
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

ALTRONIX Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ALTRONIX AL400ULB is a power supply board that converts a 28V AC input to a 12/24V DC output at 4A. Constructed with a phenolic/fiberglass material, this unit is designed for industrial applications requiring a regulated DC power source.

Frequently Asked Questions

What is the ALTRONIX AL400ULB power supply used for?

The ALTRONIX AL400ULB converts a 28V AC input to a regulated 12/24V DC output at 4A. It is used in industrial control panels, access control systems, and security applications that require a reliable DC power source from an AC supply.

What are the specifications of the ALTRONIX AL400ULB?

The ALTRONIX AL400ULB has an input voltage of 28V AC and delivers 12/24V DC output at 4A. It is constructed with a phenolic/fiberglass material. The manufacturer part number is AL400ULB.

Where to buy the ALTRONIX AL400ULB power supply worldwide?

3G Electric supplies the ALTRONIX AL400ULB power supply to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this item.

How to install the ALTRONIX AL400ULB power supply?

Mount the ALTRONIX AL400ULB on a non-flammable surface using the provided hardware. Connect the 28V AC input to the designated terminals, then set the output voltage selector to 12V DC or 24V DC as needed. Ensure the load does not exceed 4A.

Used in

Common applications for ALTRONIX
Security system power distribution — Altronix TP2450 plug-in transformer for powering access control panels
Industrial control circuits — Altronix T2428300 open core control transformer for 24V AC control voltage
Alarm system installation — Altronix TP1650 transformer for 16.5V AC output to alarm panels
Equipment enclosure mounting — Altronix TMV2 backplane panel for organizing components in a cabinet
Low-voltage lighting control — Altronix TP2440 transformer for 24V AC supply to lighting relays
Building automation — Altronix T28140D control transformer for 28V AC power to HVAC controllers

ALTRONIX Products

3G Electric supplies ALTRONIX power supply boards. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from ALTRONIX

View all ALTRONIX parts →
ALTRONIX Power Supply Off Line 12/24VDC @ 6Av 115V: Power Supply Off Line, 115V AC (MPN OLS180). Key specifications — Input Voltage: 115V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply Off Line.
ALTRONIX
ALTRONIX Power Supply Off Line 12/24VDC @ 6Av 115V: Power Supply Off Line, 115V AC (MPN OLS180). Key specifications — Input Voltage: 115V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply Off Line.
ALTRONIX Linear Power Supply/Charger - 24VDC @ 750mA: Linear Power Supply/Charger, 24V AC (MPN PM224). Key specifications — Input Voltage: 24V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Linear Power Supply/Charger.
ALTRONIX
ALTRONIX Linear Power Supply/Charger - 24VDC @ 750mA: Linear Power Supply/Charger, 24V AC (MPN PM224). Key specifications — Input Voltage: 24V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Linear Power Supply/Charger.
ALTRONIX Linear Power Supply/Charger - 12VDC @ 1A: Linear Power Supply/Charger, 16V AC (MPN PM212). Key specifications — Input Voltage: 16V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Linear Power Supply/Charger.
ALTRONIX
ALTRONIX Linear Power Supply/Charger - 12VDC @ 1A: Linear Power Supply/Charger, 16V AC (MPN PM212). Key specifications — Input Voltage: 16V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Linear Power Supply/Charger.
ALTRONIX Power Supply 2Out 12Dc Or 24Dc @ 1A: Power Supply, 24V AC (MPN AL125ULB). Key specifications — Input Voltage: 24V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply.
ALTRONIX
ALTRONIX Power Supply 2Out 12Dc Or 24Dc @ 1A: Power Supply, 24V AC (MPN AL125ULB). Key specifications — Input Voltage: 24V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply.
ALTRONIX Power Supply Off Line 12/24VDC @ 4Av 115V: Power Supply Off Line, 115V AC (MPN OLS120). Key specifications — Input Voltage: 115V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply Off Line.
ALTRONIX
ALTRONIX Power Supply Off Line 12/24VDC @ 4Av 115V: Power Supply Off Line, 115V AC (MPN OLS120). Key specifications — Input Voltage: 115V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply Off Line.
ALTRONIX Power Supply Off Line 12VDC @ 10A 115V: Power Supply Off Line, 115V AC (MPN OLS200). Key specifications — Input Voltage: 115V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply Off Line.
ALTRONIX
ALTRONIX Power Supply Off Line 12VDC @ 10A 115V: Power Supply Off Line, 115V AC (MPN OLS200). Key specifications — Input Voltage: 115V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply Off Line.
ALTRONIX Power Supply 12/24VDC @ 2.5A Supervised: Power Supply, 12/28V AC (MPN SMP3PM). Key specifications — Input Voltage: 12/28V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply.
ALTRONIX
ALTRONIX Power Supply 12/24VDC @ 2.5A Supervised: Power Supply, 12/28V AC (MPN SMP3PM). Key specifications — Input Voltage: 12/28V AC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Power Supply.
ALTRONIX Din Mount P/S- 6/12/24VDC @ 4A: Din Mount, 6V DC (MPN DPS5). Key specifications — Input Voltage: 6V DC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Din Mount.
ALTRONIX
ALTRONIX Din Mount P/S- 6/12/24VDC @ 4A: Din Mount, 6V DC (MPN DPS5). Key specifications — Input Voltage: 6V DC; Material: Phenolic/Fiberglass; Brand: ALTRONIX; Product Type: Din Mount.