Range :

Ratings: 3TF comes in a total of 21 ratings up to 475A. These are :
9, 12, 16, 22, 32, and 38A – Air break contactor with DIN channel mounting /screw mounting facility
45, 63, 70, 75, 85, 110, 140, 170, 205, 250, 300, 400, and 475A – Air break contactor, with screw mounting facility

Benefits :

High on performance/reliability
• 3TF contactors have been designed to operate even in severe operating conditions.
• Suitable for operation in service temperature up to 55OC without derating. Ratings at higher temperatures available upon inquiry. Hence there is no need to select a higher rated contactor, thereby reducing cost. e.g. for service temperatures up to 55OC, one can use a 16A contactor instead of 22/25A contactors of other make for a 10h.p motor which means a saving of approx. 20%
• Superior design of current-carrying parts, contact system, and the magnet system increase the reliability by offering higher electrical and mechanical endurance.
• 3TF contactors have a high short-time rating, which makes them suitable for applications having high starting currents and long run-up times.
• 3TF contactors, upto 38A, are suitable for operating voltages up to 690V and the higher ratings up to 1000V. High insulation voltage and impulse withstand voltage capacity
ensures reliable performance during occasional abnormal increases in supply voltage.
• Double break parallel bridge contact mechanism for auxiliary contacts. This ensures reliable contact at low voltage and low currents (5mA at 17VDC). Secondly, it offers unmatched reliability. (chances of 2 mal-operations in 100 mill. operations as against 4460 for single bridge contacts)