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4
Environment and usage precautions
4-3 Connection precautions
4-3-2 Tightening torque
Conductor connections should be tightened to the specified
torque because loose connections may cause overheating or
malfunctioning while overtightening may damage the screw or
the molded plastic. Always use the appropriate screwdriver for
the screw head.
Soldering must not be done when using a box-type terminal
connection.
4-3 Connection precautions
4-3-1 Reversed connection
The power supply side and the load side are indicated on the
following products. The breaking capacity for power supply
reverse connection is different than that for regular connection.
ON
OFF
Regular connection
ON
OFF
Reverse connection
Table 4-8 Breaking capacity for MCCB connected in reverse
Model number Reverse connection breaking capacity
[kA] (JIS C 8201-2-1 Ann. 2)
200V 400V
BW32AAG 2.5 –
BW32SAG 5 2.5
BW50AAG 2.5 –
BW50EAG 5 2.5
BW50SAG 10 2.5
BW50RAG 15 2.5
BW63EAG 5 2.5
BW63SAG 10 2.5
BW63RAG 15 2.5
BW100AAG 5 –
BW100EAG 15 2.5
Note: Reverse connection is possible with standard products of 125AF or higher.
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