Wacker Neuson G25 (T4i)

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  • Ideally suited for construction sites where durability, reliability and flexibility are required to supply continuous power for applications such as lighting, cranes, concrete mixers and conveyor belts.
  • Brush-less, oversized alternators with separate excitation winding and AVR (Automatic Voltage Regulation) provide superior motor starting and enhanced ability to run non-linear loads.
  • Single switch start and simple, uncluttered control panel provide unmatched ease of use.
  • Automatic remote start capability standard which is ideal for temporary standby applications.
  • Factory-installed customized options are available. These include, but are not limited to, a fluid containment system, cold weather options, a cam-lock panel, etc. Also available are optional trailers that are fully equipped and highway ready.


G25 (t4i)
L x W x H Operating (Skid) in 76.6 x 35 x 44.5
L x W x H Shipping (Skid) in 81 x 37.5 x 56.6
L x W x H Shipping/Operating (Trailer) in 133 x 60 x 69
Weight Dry (Skid) lb 1,911
Weight Operating (Skid) lb 2,332
Weight Shipping (Skid) lb 2,031
Weight Operating (Trailer) lb 2,802
Weight Shipping (Trailer) lb 2,381
Operating data
Trailer coupling Type 2in Ball
Standby output kW 20.4
Prime output kW 19.5
Voltage 3 Phase V 240/480
Current 3 Phase (Prime) A 58/29
Current 1 Phase (Prime) A 120/240
Voltage 3 Phase V 208, 220, 240, 416, 440, 480
Voltage 1 Phase V 120, 127, 139, 240, 254, 277
Circuit breaker (Main) A 70
Frequency Hz 60
Power factor 1 Phase cos Φ 1~ 1
Power factor 3 Phase cos Φ 3~ 0.8
Sound level (LwA) at Prime (23 ft / 7 m) dB(A) 65
Receptacles -20 Amp GFI Duplex 2
Receptacles -50 Amp Twist Lock 2
Engine / Motor
Engine / Motor Liquid-Cooled, 4 Cylinders
Engine / Motor manufacturer Isuzu
Emissions Certified Tier 4i
Displacement in³ 133
Operating performance SAE J1995, ISO 8528-1 hp 35.4
at rpm rpm 1,800
Coolant Capacity US qt 11.9
Engine oil Capacity US qt 8.5
Fuel type Diesel
Fuel consumption (Prime Load) US gal/h 1.8
Tank capacity -Fuel US gal 58.4
Quantity (Battery) 1
Battery V 12
Generator model Mecc Alte, Brushless w/AVR
Voltage control No Load to Full Load +/- % 1
Voltage control Steady State +/- % 0.2
Generator insulation (class) H
Frequency (Generator Speed) Hz 60
Runtime at 100% Prime Load h 32.2
Runtime at 75% Prime Load h 24.15

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