Lathem LTR-512 - Manual (Page 39)

LTRx-512 Installer’s Guide
Wiring Diagrams
35
TYPE 17 - STANDARD ELECTRIC TIME AR-2 TWO WIRE DUAL VOLTAGE
All circuits should be fused or protected by a circuit breaker (10Amp maximum)
TYPE 17 - STANDARD ELECTRIC TIME AR-3 THREE-WIRE IMPULSE
All circuits should be fused or protected by a circuit breaker (10Amp maximum)