Industrial Power Supplies: 12V Access Control Controllers vs. Used REXROTH & ABB Modules

When you're shopping for industrial power supplies transformers, the first decision is whether you need a small regulated feed or a heavy module. The four units here span that range cleanly: two compact 3A 12V controllers built for door access and electromagnetic locks, a used ABB control power supply board aimed at an ABB ACS800-104 inverter module, and a used REXROTH control power supply that can deliver 30 kW. Their listed prices span a wide range, so the real question is which input and output profile fits the equipment you already run.

Quick take

• Need a small regulated 12V feed for access control? The 12V 3A unit and the 3A 12V unit are two close entries in the same niche.
• Repairing an ABB ACS800-104 inverter? The ABB APOW-11C board is a direct replacement part.
• Need a heavy 30 kW feed at 400-480V? The used REXROTH HMV01.1E-W0030-A-07-NNNN is the clear candidate.

Listed price comparison

How to choose

Start by matching voltage and current to your load, not to the enclosure size. A 12V 3A controller can handle a door strike or a small access panel, but it will not power a servo drive or an inverter module. The ABB board is not a standalone supply: it is a control power supply board inside a specific ABB inverter package. The REXROTH unit is the only one here that goes up to 30 kW, and it is listed as used, so it belongs in a larger motor or drive cabinet.

Product notes

Used & Tested REXROTH HMV01.1E-W0030-A-07-NNNN Control Power Supply

If your cabinet runs a servo or drive train that needs a 30 kW feed from a 400-480V source, this used REXROTH unit is the one. It is listed as Used & Tested, so its condition is clear before you buy. The catch is that it sits far above the other three on price, and it is much larger than a 12V door controller could use. The listed input voltage range is 400-480V and output power is 30 kW, so it is not for low-voltage control wiring.

ABB APOW-11C Control Power Supply Board

This is a used control power supply board for an ABB ACS800-104 inverter module. It is listed as a 3-phase unit, and the product name points directly at that intended application. If you are holding an ACS800-104 module that needs a power supply board replacement, this is the direct match. The limitation is the scope: it is a board, not a standalone power supply, and it is described as used, so you are evaluating a working pull rather than a fresh component.

12V 3A Power Supply Control for Door Access Control, Access Control Power Supply

For low-voltage security hardware, this unit gives you a regulated 12V, 3A feed with short-circuit protection in a metal housing. Its intended uses include electric locks and electromagnetic locks, making it a quick upgrade for an access control cabinet. The limitation is the output ceiling: 3A at 12V is enough for a few locks or a small controller, but you will not stretch it to larger industrial loads.

3A 12V Power Supply Control for Door Access Control, Access Control Power Supply

This controller takes AC 110-240V, outputs DC 12V at 3A, and includes an adjustable 0-15s delay plus a pluggable green terminal block. That makes it a practical choice for access control wiring where you want a small delay option. The trade-off is the same ceiling as the other door controller: 3A output and a focus on door access rather than general industrial power.

Final recommendation by use case

• Heavy industrial servo or drive feed: choose the used REXROTH HMV01.1E-W0030-A-07-NNNN at USD 2,474.68.
• ABB ACS800-104 inverter board swap: choose the ABB APOW-11C at USD 80.00.
• Compact 12V access control supply with short-circuit protection: choose the 12V 3A unit at USD 12.75.
• 12V access control supply with adjustable delay and the lowest listed price: choose the 3A 12V unit at USD 12.55.

Start with your load's voltage and current requirements, and the right product becomes obvious.