Kohler 30-400 Amp Series R340 Automatic Transfer Switch, Non Automatic Transfer Switch Operation and Installation Manual (tp5088)

This manual is what I’d keep on hand any time I’m installing or servicing a Kohler R340 transfer switch in a commercial building, small plant, or critical backup setup. The switch’s job is to move the load cleanly between utility and generator power, and this document walks you through how to mount, wire, and set it up so it actually does that reliably. If, for example, the loads aren’t transferring when the generator comes online, I’d use this manual to verify connections, check the control logic, and confirm the switch is being operated correctly in automatic or non-automatic mode.

Applications & Use Cases

• Install a new R340 ATS and route power/control wiring correctly the first time.
• Verify field connections when troubleshooting no-transfer or no-return-to-utility complaints.
• Set up non-automatic operation so you can safely transfer loads by hand when required.
• Confirm ratings and configurations before adding or moving loads on an existing switch.
• Support periodic inspections by checking clearances, terminations, and operating sequences.

FAQ

Q: Can I keep this manual on a tablet or phone at the jobsite?

A: Yes, it’s practical to use digitally so you can zoom diagrams and search text while you’re at the switchboard.

Q: Is this worth printing out?

A: I’d print the key installation and operation pages so they’re available even if you lose power or signal in the electrical room.

Safety Note

Always isolate all power sources and verify zero energy before working inside the transfer switch enclosure.

Kohler 30-400 Amp Series R340 Automatic Transfer Switch, Non Automatic Transfer Switch Index:

Safety Precautions
Introduction
Automatic Transfer Switch Function
Non-automatic Transfer Switch Function
Ratings

Installation
Unpacking
Mounting
Line Connections
Auxiliary Connections

Functional Test
Manual Contactor Operation
Electrical Operation

General Maintenance
Troubleshooting

Sequence of Operation
Normal Source Failure
Normal Source Restoration

Optional Accessories
Time Delays
Front Panel Indicators and Controls
Operation Mode Selector Switches
Optional Panel Lamp Accessories
Auxiliary Relay Contacts
Contactor Auxiliary Contacts
Generator Set Exercising Timer
Battery Charger
Area Protection with Override
Cranking Limiter
Motor Load Transfer / Inphase Monitor or Synch-check Relay
Load-Shedding Contacts

Disconnecting the Inner Control Panel Assembly
To Disconnect the Plug
To Reconnect the Plug

Manual Load Transfer
Wiring Diagrams
Installation Drawings

Kohler