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Crestron part number DIN-1DIMU4
The Crestron DIN-1DIMU4 is a four channel universal dimmer on a single line feed that can dim both forward phase and reverse phase loads. Each channel detects the type of dimmable load connected to it, and the module works with a Crestron control system over Cresnet.
Price on request
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Need it installed? Our Crestron certified engineers install, set up and programme everything we supply. A 4 hour visit is €440 and a full day €880, plus VAT.
About the Crestron DIN-1DIMU4
A single model supports 120 V and 220 to 240 V supplies at 50/60 Hz, with up to 5 A per channel and 10 A for the module. At 230 VAC that is 1150 W per channel and 2300 W in total. Auto load detection selects reverse phase (trailing edge) for incandescent and electronic low-voltage loads, and forward phase (leading edge) for magnetic low-voltage and neon loads. Any channel can also be set to non-dim mode.
Built-in overcurrent protection guards against failure from excessive loading or improper wiring of the outputs, and phase-synchronous detection resists power line noise to reduce lamp flicker. When all four channels are fully off, the internal master relay opens to give air-gap isolation for safe lamp changing. An override input lets an external contact closure set each channel to a saved override level.
The module snaps onto a 35 mm DIN rail, occupies 12 DIN module spaces (216 mm) and fits enclosures with a 45 mm front panel cutout. Screw terminals accept up to 2.5 mm² cable. Minimum load is 15 W per channel for incandescent, and 50 W for magnetic low-voltage loads with halogen or LED lamps and for AC dimmable LED. Setup is from the front panel or software.
Key features
- 4 channels of forward or reverse phase dimming
- Auto load detection on every channel
- 120 to 240 VAC, 50/60 Hz operation
- Up to 5 A per channel and 10 A per module
- Short circuit and overcurrent protection
- Primary air-gap relay and override input
- Selectable non-dim mode
- Cresnet communications; setup via front panel or software
DIN-1DIMU4 specifications
| Line power | 120 to 240 VAC, 50/60 Hz; 1 feed |
|---|---|
| Channels | 4 dimmer channels, forward or reverse phase |
| Rating per channel | 5 A; 600 W at 120 VAC, 1150 W at 230 VAC, 1200 W at 240 VAC |
| Module total | 10 A; 1200 W at 120 VAC, 2300 W at 230 VAC, 2400 W at 240 VAC |
| Load types | Electronic and magnetic low voltage, incandescent, neon/cold cathode, 2-wire dimmable fluorescent, non-dim |
| Minimum load | 15 W per channel for incandescent; 50 W per channel for magnetic low voltage with halogen or LED lamps; 50 W for AC dimmable LED |
| Protection | Short circuit and overcurrent protection; primary air-gap relay |
| Communications | Cresnet secondary; uses 0.6 W from Cresnet when line power is not available |
| Mounting | 35 mm DIN EN 60715 rail, DIN 43880 form factor, 45 mm front panel cutout; 12 DIN module spaces (216 mm) |
| Dimensions | Height 95 mm (3.71 in), width 216 mm (8.48 in), depth 60 mm (2.35 in) |
Part numbers on this page
| Part number | Version | Price | Add |
|---|---|---|---|
| DIN-1DIMU4 | Standard | On request |
Where the DIN-1DIMU4 is used
Crestron installed by 1Install
We supply, install and programme Crestron in homes and businesses across Ireland. These photos are from our own installations. See more in our projects, or budget a whole system with our Quote Builders for homes and meeting rooms.



Questions about the Crestron DIN-1DIMU4
What is the Crestron DIN-1DIMU4?
It is a 4 channel universal dimmer for DIN rail mounting, with one line feed. It dims both forward phase and reverse phase loads, detects the load type on each channel automatically and connects to a Crestron control system over Cresnet. It supports 120 V and 220 to 240 V lighting.
How does auto load detection work on the DIN-1DIMU4?
Each channel detects the dimmable load type connected to it and selects the matching mode. Reverse phase (trailing edge) mode is used for incandescent and electronic low-voltage loads, and forward phase (leading edge) mode for magnetic low-voltage, neon and similar loads. Front panel LEDs show which mode each channel is using.
What is the maximum load per channel?
Each channel is rated at 5 A: 600 W at 120 VAC, 1150 W at 230 VAC or 1200 W at 240 VAC. The module total is 10 A, which is 2300 W at 230 VAC. Minimum load is 15 W per channel for incandescent and 50 W for magnetic low-voltage or AC dimmable LED loads.
What protection does the module have?
It has built-in short circuit and overcurrent protection, which prevents failure caused by excessive loading or improper wiring of the outputs. A primary air-gap relay opens when all four channels are fully off, isolating the controlled circuits so lamps can be serviced and changed safely.
How is the DIN-1DIMU4 mounted?
It fits a 35 mm DIN EN 60715 rail in enclosures with a 45 mm front panel cutout and occupies 12 DIN module spaces (216 mm). Line, neutral, ground and dimmed outputs use captive screw terminals for up to 2.5 mm² wire, and Cresnet connects to paralleled 4-pin terminal blocks.
How much is the Crestron DIN-1DIMU4?
Crestron asks its dealers to give the price of the DIN-1DIMU4 directly rather than publish it online. Add it to your quote list and we will send you a written quote, with delivery, and installation and programming if you need them.
Can 1Install supply, install and programme the DIN-1DIMU4?
Yes. 1Install is an authorised Crestron Elite Partner with offices in Skerries, Co. Dublin and Cork. We can supply the DIN-1DIMU4 on its own, or install, set up and programme it as part of your system. Installation visits are €440 for 4 hours or €880 for a full day, plus VAT and travel.
Does the DIN-1DIMU4 come with a warranty?
Yes. Everything we supply is new, genuine Crestron with Crestron's standard warranty. If the DIN-1DIMU4 develops a fault, contact us and we will handle the claim with Crestron. If we installed it, our workmanship is guaranteed for the lifetime of the system.
Is the DIN-1DIMU4 in stock?
We order Crestron for each quote, so availability depends on Crestron's stock at the time. We check it before we quote and put the expected delivery date on your quote, so you know where you stand before you pay.
Can I buy the DIN-1DIMU4 without installation?
Yes. We supply Crestron to end users, with or without installation. Like most Crestron devices of this type, it needs setting up or programming before it works in a system, and we can quote for that too.
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