Schneider Electric M9F21345 3 Pole Circuit Breaker
The Schneider Electric M9F21345 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 45 Amps and a voltage rating of 240/415/440VAC. It has an interrupting rating of 10kAIC at 240VAC. The M9F21345 has a DIN rail mounting type.
What is the trip curve for the M9F21345 circuit breaker?
The M9F21345 features a B-curve thermal-magnetic trip profile, which trips between 3.2 and 4.8 times the rated current. This curve is designed for protecting sensitive equipment and control circuits with very low inrush currents.
Is the Schneider Electric M9F21345 rated as a branch circuit breaker?
No, it is a UL 1077 Recognized supplementary protector. It is designed to provide additional protection within appliances or electrical equipment where branch circuit protection is already provided upstream.
What wire size and torque are required for the M9F21345 terminals?
The tunnel terminals accept 18 AWG to 2 AWG copper wire. The manufacturer recommended tightening torque for this 45A breaker is 31 lb-in (3.5 N.m).
How is the M9F21345 installed in a control panel?
This Multi9 C60SP series breaker clips directly onto a standard 35mm DIN rail (35 x 7.5 mm symmetrical rail), allowing for modular and space-saving installation.
Which auxiliary accessories are compatible with the M9F21345?
It accepts standard Multi9 C60 electrical auxiliaries, including the M9A26914 (OF auxiliary contact), M9A26917 (SD fault indicating contact), and M9A26948 (MX shunt trip release).
What is the alternate cross-reference part number for the M9F21345?
This Schneider Electric Multi9 breaker is frequently cross-referenced under the alternate part number 482K72.
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