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Motor starters need a contactor for frequent make/break, a breaker or relay for overload, and a monitor for phase loss. Ratings below are from the live CJX2, MC and WTXU pages.
A DOL or reversing starter uses a CJX2 or MC contactor on the motor line.
WTXU-03 watches three-phase voltage (true RMS, 45-65Hz).
WTKA1-01 watches current.
Time relays handle star-delta or delayed start.
CJX2-2510 is a 25A AC contactor; CJX2-9511 is 95A.
CJX2-D115 is a 115A high-ampere frame.
MC-40a is a 40A magnetic contactor at 220V coil.
WTXU-03 is a 1-module DIN relay with 8 button-set voltage ranges and LED status.
Motors draw a multiple of FLA at start. The contactor must survive that, and the monitor must drop the coil on phase loss.
CJX2-2510 (25A) covers small conveyors and pumps. CJX2-9511 (95A) and CJX2-D115 (115A) cover larger motors. MC-40a is a compact 40A, 220V-coil option for OEM panels.
WTXU-03 measures true RMS, 45-65Hz, voltage error <1%, 8 rated voltages set by buttons, 1-module DIN, LED status. It opens the contactor coil before a single-phased motor overheats.
WTKA1-01 current monitoring relay sits on the CT or loop and trips when current stays above the set point. Pair it with the CJX2 coil circuit.
AC contactors plus voltage and current monitors from the catalog.
CJX2-2510 AC Contactor 25A. Silver double break contacts, flame retardant. View CJX2-2510 AC Contactor 25A →
CJX2-9511 AC Contactor 95A. Silver alloy, thermal overload protection. View CJX2-9511 AC Contactor 95A →
CJX2-D115 High Ampere AC Contactor 115A. Industrial-grade, high reliability. View CJX2-D115 High Ampere AC Contactor 115A →
MC-40a Magnetic Contactor 220V 50/60Hz. DIN Rail, UL CE Listed. View Wutai MC Magnetic Contactor MC-40a 220V →
WTXU-03 3 Phase Voltage Relay. View 3 Phase Voltage Relay WTXU-03 →
WTKA1-01 Current Monitoring Relay. View Current Monitoring Relay WTKA1-01 →
Match FLA to the contactor, then add WTXU / WTKA1 on the control circuit.
CJX2-2510 25A or MC-40a 40A. WTXU-03 on the three-phase incoming.
CJX2-9511 95A AC contactor. Add WTKA1-01 if the process jams or overloads often.
CJX2-D115 115A. Higher frames in the same D/F series go to 170A, 245A, 330A and 410A.
WTA1 power-on delay or WTT8 / WTM1 time relays in the control circuit.
