The image shows an Airman SDG125S mobile generator. This is a 125 kVA prime power generator designed for reliable performance and extended power in various applications.
Airman SDG125S diesel generator. You can see the "SDG125S" model number clearly labeled on the side. It's a substantial, enclosed generator mounted on a tandem-axle trailer, making it highly portable for various job sites around Tomball. The specifications indicate it offers 137.5 kVA of standby power and 125 kVA of prime power, with a runtime of 23.3 hours. It also features an "Airman Generators Tier 4 Final" emission standard. This type of generator is often used for construction, events, or as a reliable
The image shows an Airman SDG125S mobile generator. This is a 125 kVA prime power generator designed for reliable performance and extended power in various applications.
Airman SDG125S diesel generator. You can see the "SDG125S" model number clearly labeled on the side. It's a substantial, enclosed generator mounted on a tandem-axle trailer, making it highly portable for various job sites around Tomball. The specifications indicate it offers 137.5 kVA of standby power and 125 kVA of prime power, with a runtime of 23.3 hours. It also features an "Airman Generators Tier 4 Final" emission standard. This type of generator is often used for construction, events, or as a reliable
Airman

Airman 125kVA Mobile Diesel Generator SDG125S-8E1 Three-Phase Prime Power Isuzu Engine Tier 4 Final 23.3-Hour Runtime Smartload System Trailer-Mounted

Only 1 left
SKU: SDG125S-8E1
$72,500.00
Description

Power That Goes the Distance – Rugged, Efficient, and Built for Remote Demands

Call for Availability and Shipping 281-351-2211

When your site demands reliable, high-output power with extended runtime, the Airman SDG125S-8E1 125kVA Mobile Generator delivers. Designed for construction, disaster relief, and off-grid operations, this unit combines three-phase and single-phase switchable output with a Tier 4 Final Isuzu BR-4HK1X diesel engine and a 23.3-hour runtime at full load.

Equipped with Smartload Load Bank technology, CamLock connections, and a lockable voltage selector switch, the SDG125S-8E1 adapts to dynamic power needs while maintaining safe, efficient operation. The integrated two-way auxiliary fuel tank piping allows seamless connection to external tanks—ideal for remote sites requiring continuous power. Additional features like a battery disconnect, engine block heater, and onboard battery charger ensure readiness in all conditions.

What's Included

  • (1) Airman SDG125S-8E1 Mobile Generator – 125kVA Prime / 137.5kVA Standby
  • (1) Isuzu BR-4HK1X Tier 4 Final Diesel Engine – 147.9 HP @ 1,800 RPM
  • (1) Integrated Trailer – 8,352 lb GVWR with 1,650 lb trailer weight
  • (1) Smartload Load Bank System
  • (1) Lockable Voltage Selector Switch
  • (1) CamLock Connection Panel
  • (1) Battery Disconnect, Engine Block Heater, and Battery Charger

Available for pickup at our location:

30702 State Highway 249
Tomball, Texas 77375 

Monday-Friday 7am-5pm CST 
Saturday 7am-1pm CST

Specifications

Model Number SDG125S-8E1
Prime Power 125 kVA / 100 kW
Standby Power 137.5 kVA / 110 kW
Engine Isuzu BR-4HK1X – 147.9 HP @ 1,800 RPM
Voltage – Single Phase 120V / 127V / 139V / 240V / 254V / 277V
Voltage – Three Phase 208V / 220V / 240V / 416V / 440V / 480V
Amperage – 3 Phase 208V 328 A
Amperage – 3 Phase 240V 300 A
Amperage – 3 Phase 480V 150 A
Amperage – 1 Phase 240V 300 A
Runtime @ Full Load 23.3 hours
Fuel Tank Capacity 168 gal
EPA Emission Level Tier 4 Final
Operating Weight 6,702 lbs
Dry Weight 5,379 lbs
GVWR 8,352 lbs
Trailer Weight 1,650 lbs
Dimensions (W/O Trailer) 113″ L x 51″ W x 73″ H
Dimensions (With Trailer) 196″ L x 79″ W x 85″ H
Warranty Manufacturer Warranty
Prop 65 WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

Key Features

  • Smartload Load Bank System for efficient load management
  • CamLock connections for fast, secure setup
  • Lockable voltage selector switch for safety and flexibility
  • Auxiliary fuel piping for extended runtime in remote locations
  • Trailer-mounted for easy transport and deployment

Power your next project with the Airman SDG125S-8E1—built for performance, engineered for mobility, and trusted in the toughest environments.


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