Chromalox specifications Wiring Diagrams, Use with, UB-502D-T, UB-752D-T, 480V, 1Ø or 3Ø

			WIRING DIAGRAMS
Figure 5	}	1 or 3 Phase 60 Hz			Alternate 240V Wiring
Use with:		Power Supply 480 Volts			X1	X3	X2	X4
								Heater Bank
UB-502D-T &
	Fused			Integral 480V/240V		120V Wiring		1Ø Motor
UB-752D-T	Switch			or 120V Transformer	X1	X3	X2	X4
480V, 1Ø or 3Ø		Contactor		Thermal				Heater
				Cutout
			Control			H1	H2
			Switch Optional
		Thermostat	This Wiring	Ground				Wiring Comp't
			by Customer					Baffle
		When Used
				C1
				T1
				T2
				F1

F2 For 3 Phase Only

L1

L2

L3

Figure 6

Use with:

UB-502D-R & UB-752D-R 480V, 1Ø or 3Ø

}1 or 3 Phase 60 Hz Power Supply 208, 240 or 480 Volts

Fused	Control
Switch	Source 120 or
	240 Volts, 60	Cycle

Fused
Control Switch	This Wiring
		Ground
Thermostat	by Customer
When Used		C1
		C2
		L1
		L2
		L3

1Ø Motor	Heater Bank
	Heater
	Integral
	Contactor
	Cutout
	Wiring Comp't
	Baffle

For 3 Phase Only

Figure 7

Use with:

UB-502D-TR & UB-752D-TR 480V, 1Ø or 3Ø

}1 or 3 Phase 60 Hz Power Supply 480 Volts

Fused
Switch
Control
Switch Optional
Thermostat	This Wiring
When Used
	by Customer
	T1
	T2
	C1
	C2
	L1
	L2
	L3

Cutout

Integral 480V/240V or 120V Transformer

Ground

Alternate 240V Wiring					1Ø Motor	Heater Bank
X1	X3		X2	X4
X1	120V Wiring					Heater
	X3	X2	X4
						Integral
	H1		H2			Contactor
						Wiring Comp't
						Baffle

For 3 Phase Only

Figure 8

Use with:

UB-502D-R 208V, 1Ø or 3Ø 240V, 1Ø or 3Ø

UB-752D-R 208V, 3Ø 240V, 3Ø

}1 or 3 Phase 60 Hz

Power Supply 208 or 240 Volts

Heater

Fused
Switch
Thermostat	This Wiring	Ground
When Used
	by Customer
		T1
		T2
		L1
		L2
		L3

1Ø Motor	Heater Bank
Cutout	Integral
	Contactor
	Wiring Comp't
	Baffle

For 3 Phase Only