What is the control supply voltage for this Siemens power contactor?
The control supply voltage for the Siemens 3RT2028-1BB40 power contactor is 24V DC.
What is the operating current for the auxiliary contacts?
The operating current for the auxiliary contacts of the 3RT2028-1BB40 varies depending on the type of operation. For AC-12, the maximum current is 10A; for AC-15, it is 10A at 230V and 3A at 400V; for DC-12, it is 6A at 48V and 60V, 3A at 110V, and 1A at 220V; for DC-13, it is 10A at 24V, 2A at 48V, and 2A at 60V.
What are the mechanical performance ratings for this power contactor?
The mechanical performance ratings for the Siemens 3RT2028-1BB40 power contactor are as follows: 3 hp for single-phase squirrel cage motors at 110/120V, 5 hp at 230V, 10 hp for three-phase squirrel cage motors at 200/208V and 220/230V, 25 hp at 460/480V and 575/600V.
Does this power contactor have a mirror contact according to IEC 60947-4-1?
Yes, the Siemens 3RT2028-1BB40 power contactor has a mirror contact according to IEC 60947-4-1.
What is the frequency of operation for this power contactor?
The frequency of operation for the 3RT2028-1BB40 power contactor varies depending on the type of operation: 1,000 operations per hour for AC-1, 750 operations per hour for AC-2 and AC-3, and 250 operations per hour for AC-4, according to IEC 60947-6-2.
What are the closing and opening delays for this power contactor?
The closing delay for the Siemens 3RT2028-1BB40 power contactor is between 50 and 170 milliseconds, while the opening delay is between 15 and 17.5 milliseconds when operating at DC.