© Danfoss | Climate Solutions | 2022.03
Electrical data, connections and wiring
MLZ/MLZ090-116-130-160-200-240 compressors are available only in code 4.
Motor voltage
Electrical power is connected to the compressor
terminals by Ø 4.8 mm (3/16”) screws.
The maximum tightening torque is 3 Nm. Use a
1/4’’ ring terminal on the power leads.
Wiring connections
Motor voltage
code 4
Nominal voltage
50 Hz
380-415 - 3ph
Voltage range
50 Hz
342-457 V
The terminal box is provided with 2 triple
knockouts and 1 single knockout for power
supply and 4 double knockouts for the safety
control circuit.
The 3 power supply knockouts accommodate the
following diameters:
• Ø 50.8 mm (UL 1"1/2 conduit) and Ø 43.7
mm (UL 1"1/4 conduit) and Ø 34.5 mm (UL 1"
conduit)
• Ø 40.5 mm (ISO40) and Ø 32.2 mm (ISO32) and
Ø 25.5 mm (ISO25)
• Ø 25.5 mm (ISO25)
The 4 others knockouts are as follows:
• Ø 22.5 mm (PG16) (UL 1/2") and Ø 16.5 mm
(ISO16) (x2)
• 20.7 mm (ISO20 or PG13.5) (x2)
MLM/MLZ116-160-200-240
Black
Blue
Brown
Faston 1/4" tabs
Power supply
Sump heater
Module
power supply
M1-M2
control circuit
The motor protection module comes preinstalled
within the terminal box. Phase sequence
protection connections and thermistor
connections are pre-wired. The module must be
connected to a power supply of the appropriate
voltage. The module terminals are 6.3 mm size
Faston type.
L N S1 S2 M1 M2
L1 L2 L3
Black Blue Brown
Phase sequence input
Internal control contact
Safety
circuit
Thermistor
connection
Module power
L N
M1 M2
Note: please make sure M1/M2 is connected to OEM controller
and L/N is connected to outside power supply, otherwise, there
will be no motor protection.
The terminal box is provided with a Ø 25.5 mm
and a Ø 29 mm knockouts.
MLM/MLZ090
Terminal box
Ø 25.5 mm knockout
Power supply
Ø 29 mm knockout
15
AB243586442698en-000601
Application Guidelines
Single compressors