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This Siemens SENTRON auxiliary circuit connector, part number 3VA9977-0KP80, is an accessory designed for use with all 3VA plug-in units. It features a rated operational voltage of 500V AC at 50 Hz and 250V DC, with a thermal current limit of 10A.
The connector has a degree of pollution of 3 and an overvoltage category of III. Mechanically, it measures 68 mm in height, 15 mm in width, and 55 mm in depth, with a net weight of 55g. The operating temperature range is from -25°C to 70°C.
Connections are made via screw-type terminals. For IEC connections, the stripped length is 15 mm, and the connectable conductor cross-section for auxiliary contacts ranges from 20 AWG to 14 AWG. UL connections require a stripped length of 0.6 inches, with tightening torques specified between 3.5 and 4.4 lbf·in.
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The operating voltage is 500V AC (acc. to CSA and UL) and 250V DC (acc. to CSA and UL).
The operating temperature range is -25°C to 70°C.
The thermal current limit is 10A.
It uses screw-type terminals with a tightening torque of 0.4 to 0.5 N·m.
The rated impulse withstand voltage is 4 kV.