Can I feed 240 VAC service into the MX 400 cabinet?
Product applicability
The following products are discussed in this article:
- MX Series: R920-MX, R829-MX, R247-MX, CHEVRON-MX and WWD-MX
- Equipped with MX 400 AC cabinet
The MX 400 AC cabinet is factory prepped and setup for 120 VAC input when configuring your system for AC power. In instances where you wish to have 240 VAC service you will want to do the following:
- Remove the wiring at the bottom of the power supply.
- Remove the wiring and stock breaker (ABB ST201M-C4).
- Replace with a two pole breaker, such as ABB ST202M-C4 or equivalent.
- Add wires to the bottom of each breaker to the AC input (bottom) of the power supply.
- Proceed with wiring cabinet for 240 VAC.
| MX 400 | Stock Breaker (1P) | New Breaker (2P) |
|---|---|---|
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Ensure this procedure is completed by a qualified electrician. Follow your local electrical guidelines.
Note: labelling will no longer be accurate and is representative of 120 VAC only. Recommend changing white neutral wire for black.