Product Manual

2 Introduction

2.1 Owner Manual

This manual covers models produced under the Cummins

Power Generation (CPG) brand names.

This manual provides information necessary for operation, installation, and service of RA Series transfer

switches. This manual also includes parts information.

This is an open transition transfer switch which does not include an integral automatic transfer switch

(ATS) control. With an open transition switch, there is never a time when both sources are supplying

power to the load.

This manual includes information on the following types of RA Series transfer switch installations.

• Non-Service Entrance: The door panel must be removed to gain access to transfer switch

components.

• Service Entrance (One Circuit Breaker): Access to the circuit breaker can be obtained by removing

the outer door panel. An internal panel must be removed to gain access to transfer switch

components.

RA Series transfer switches are designed to only be installed with the Cummins generator models shown

below. Installing these switches with any other generator model will void the warranty.

Cummins Generator Set Models Using RA100/RA200/RA400 Transfer Switches

C30N6H C36N6H C40N6H C45N6

C45N6H C50N6H C60N6H C50N6

C22N6 C25N6 C30N6 C60N6

C36N6 C40N6 C20N6 C70N6

C10D6 C15D6 C20D6 C80N6

C25D6 C30D6 C35D6 C100N6

C40D6 C13N6H C17N6H C20N6H

Refer to the wiring diagrams at the end of this manual for specific information about switch configuration.

Use normal and necessary safety precautions before starting any service procedure. Identify all hazards

by referring to the Important Safety Precautions section of this manual and by observing all warnings and

cautions within the manual. Whenever you are troubleshooting, remember that the generator set, the

transfer switch, and the utility power source are all interdependent.