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Transfer Switch Specifications
The heart of the system.

Unlike other pre-packaged systems, Generac includes an automatic transfer switch (standard equipment with all models). This device will ensure your vital electrical loads are powered, even when you are not there.

This transfer switch is the difference between a truly automatic generator set and just another generator. No toggles to flip, no knobs to turn, no extension cords to run when you lose utility power. You will have the comfort and peace-of-mind knowing that your Guardian emergency power system does everything for you... automatically.

A two pole, 100-amp UL-listed automatic switch is standard equipment on models 04721 and 04723.

A two pole, 200-amp UL-listed automatic switch is standard equipment on models 04725 and 04988.

A two pole, 200-amp Service Disconnect transfer switch is standard equipment on model 04992.

Standard Transfer
Switch Models 04678 & 04635
Service Disconnect
Transfer Switch Models 05036 & 04945
Generator Ready Kit
Model 04397
STANDARD TRANSFER SWITCH
Model Number 04678 04635
No. of Poles 2 2
Current Rating (amps) 100 200
60 Hz Phase Single Single
Voltage Rating (VAC) 250 250
Utility Voltage Monitor (fixed)
Pick-up
Dropout

80%
60%

80%
60%
Return to Utility 15 seconds 15 seconds
Exerciser 15 min. weekly * Standard Standard
UL 1008 Listed Standard Standard
Dimensions (H"xW"xD") 20x15x7 20x15x7
Enclosure Type NEMA 3R
Outdoor Rated
NEMA 3R
Outdoor Rated
Unit Wt. (lbs.) 35 35

* When used with liquid-cooled models. If used with air-cooled models exercise duration will be 12 minutes.

SERVICE DISCONNECT TRANSFER SWITCH
Model Number 05036 04945
No. of Poles 2 2
Current Rating (amps) 100 200
60 Hz Phase Single Single
Voltage Rating (VAC) 250 250
Utility Voltage Monitor (fixed)
Pick-up
Dropout

80%
60%

80%
60%
Return to Utility 15 seconds 15 seconds
Service Disconnect Circuit Breaker 100 Amp HACR Type 200 Amp HACR Type
Exerciser 15 min. weekly * Standard Standard
UL 1008 Listed Standard Standard
Dimensions (H"xW"xD") 23.5x13x7.4 23.5x13x7.4
Enclosure Type NEMA 3R
Outdoor Rated
NEMA 3R
Outdoor Rated
Unit Wt. (lbs.) 50 50

* When used with liquid-cooled models. If used with air-cooled models exercise duration will be 12 minutes.

GENERATOR READY KIT
Model Number 04397
No. of Poles 2
Current Rating (amps) 100
60 Hz Phase Single
Voltage Rating (VAC) 250
Utility Voltage Monitor (fixed)
Pick-up
Dropout

80%
60%
Return to Utility 15 seconds
Exerciser 12 min. weekly † Standard
UL 1008 Listed Standard
Dimensions (H"xW"xD") 26.5x12.5x7
Enclosure Type NEMA 1
Indoor Rated
Unit Wt. (lbs.) 75

† When used with air-cooled standby generator models. No exercise function takes place when used with the Ultra Source portable generators.

Transfer Switch Specifications