Cummins RS125: Specs & Datasheet
MPN: RS125The Cummins RS125 is listed under standby generators in the Cummins catalog at Portlandia Electric Supply. Contractors and buyers searching “RS125” for specifications or the datasheet land here: below are the published specifications we have on file for this exact part number, plus compatibility and sourcing notes. Key published ratings: Voltage 277/480 V, Three-Phase.
Specifications
| Manufacturer | Cummins |
|---|---|
| MPN | RS125 |
| Rated Power (Pmax) | 125 kW |
| Apparent Power (kVA) | 156 kVA |
| Voltage | 277/480 V, Three-Phase |
| Frequency | 60 Hz |
| Voltage Regulation | ±1.0% |
| Frequency Regulation | ±0.25% |
| Sound Level @ 7 m | ~71 dB(A) |
| Enclosure Wind Rating | Up to 180 mph |
| Engine Model | 8.9 L Turbocharged After-cooled Inline-6 |
| Rated Speed | 1800 rpm |
| Cooling System | Liquid-Cooled |
| Enclosure Material | Powder-coat aluminium |
| Dimensions (L × W × H) | 143 in (3621 mm) × 40 in (1016 mm) × 72 in (1836 mm) :contentReference[oaicite:8]{index=8} |
| Weight | 3915 lb (1776 kg) :contentReference[oaicite:9]{index=9} |
| Cold-Start Capability | Down to –40 °F (–40 °C) |
| Wind Load Capacity | Up to 180 mph |
Compatible With / Used In
- Generators applications — manufacturer-listed product category for this part number
- Exact part-number replacements — this page covers MPN RS125 only — confirm the full part number on your unit, quote, or datasheet before ordering
- Contractor and installer sourcing — quantity pricing and nationwide shipping from Portlandia Electric Supply — call (502) 790-0600
Datasheet Availability
Cummins publishes datasheets and installation documents through its official website. For the RS125 datasheet PDF specifically, call (502) 790-0600 and we will include it with your quote.
View the RS125 product page →Get a quote →
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Frequently Asked Questions
What are the specs of the Cummins RS125?
Key published specs — Rated Power (Pmax): 125 kW; Apparent Power (kVA): 156 kVA; Voltage: 277/480 V, Three-Phase; Frequency: 60 Hz. The full specification table above lists every value we have on file; values marked “vendor listing” are from our supplier feed and pending manufacturer verification.
Where can I get the RS125 datasheet?
Cummins publishes datasheets and installation documents through its official website. For the RS125 datasheet PDF specifically, call (502) 790-0600 and we will include it with your quote.
Is the Cummins RS125 in stock?
Yes — in stock at Portlandia Electric Supply with nationwide shipping. Call (502) 790-0600 for pricing and lead time.
How do I make sure the RS125 is the right part?
Match the full part number RS125 exactly against your unit, quote, or existing datasheet — part-number families differ in ratings. Call (502) 790-0600 and our team will verify it before you order.
Specifications sourced from the manufacturer listing data maintained by Portlandia Electric Supply. Where a value is not published, it is marked as such — we do not estimate specifications. Questions: call (502) 790-0600. Portlandia Electric Supply, Louisville, KY — 12+ US distribution hubs.