Legrand PA120Y - Manual (Page 3)

12. Double-check all connections.
13. Reattach cover to unit in appropriate direction, so that Sentrex logo reads straight across the unit.
14. The SPD can now be activated by turning on the circuit breaker. The green indicator lights will illuminate assuming the
unit has been installed properly.
SPD
120/240 VOLT SINGLE PHASE
120/240 Volt 1Ø 3W
Primary
Voltage
Secondary Voltage
120 Volts
240 Volts
Phase 1
Neutral
Phase 2
120T MODELS
Connect Line 1 from panel to Phase 1 on SPD.
Connect Line 2 from panel to Phase 2 on SPD.
NOTE: When using for 120V only and
connecting to only one phase,
connect Line 1 from panel to Phase 1
on SPD. Use the supplied jumper wire
to connect Phase 1 and Phase 2 on
the SPD.
DO NOT USE THE JUMPER WIRE IF
YOU ARE CONNECTING 240V.
Connect Ground (green wire) from panel to
Ground on SPD.
Connect Neutral (white wire) from panel to
Neutral on SPD.
120Y & 277Y MODELS
Lines from panel may be connected without
regard to Phase on SPD.
Ground (green wire) from panel to Ground
on SPD.
Neutral (white wire) from panel to Neutral
on SPD.
120 Volts
SPD
120/240 VOLT HIGH LEG DELTA
ØA
N
ØB
ØC
120 Volts
208 Volts +/-
High Leg
Phase 1
Neutral
Phase 3
Phase 2
120 Volts
240DCT MODELS
NOTE: Hi-Leg to Ground must be identified
and connected to Phase 2 ONLY.
USE EXTREME CAUTION WHILE MAKING
VOLTAGE MEASUREMENTS.
Ground (green wire) from panel to Ground on SPD.
Neutral (white wire) from panel to Neutral on SPD.
SPD
120/208 VOLT WYE
& 277/480 VOLT WYE
ØA
N
ØB
ØC
Phase 1
Neutral
Phase 3
Phase 2