Product introduction:
The limit switch MD441-11Y is made of cast steel housing and has the characteristics of low cold resistance. This product is suitable for AC 25-60Hz, voltage up to 500V, DC voltage up to 400V control circuit or auxiliary circuit, as control, control, limit, interlock and other purposes.
operating principle:
Travel switch is widely used in all kinds of machine tools and lifting machinery to control their travel, terminal limit protection. In the control circuit of the elevator, the travel switch is also used to control the speed of opening and closing the car door, the limit of automatic opening and closing, and the upper and lower limits of the car protection. The travel switch can be installed on a relatively stationary object (such as a fixed frame, door frame, etc., referred to as still life) or a moving object (such as a car, door, etc., referred to as an animal). When an animal approaches a still life, the link of the switch drives the contact of the switch causing the closed contact to break or the open contact to close. The action of the circuit and mechanism is controlled by the change of the opening and closing state of the switch contact.
·2 cable entries M 20 x 1.5
·Actuator head can be repositioned in steps 4 x 90
·Metal enclosure
·Continuous adjustment of lever position 360
·2 Contacts
·Lever can be transposed by 180
·In temperature-resistant version,the roller can be mounted in two different positions on the shaft
·106 mm x 99 mm x 63 mm (basic component)
·Protection class IP65
Mechanical data | |
Actuating element | Roller lever |
Roller material | Plastic |
Mechanical life,minimum | 5.000,000 Operations |
Actuating angle,from left of switch axis | 30. |
Actuating angle,from right of switch axis | 30° |
Contact opening | 2x 2.5 mm |
Actuating speed,minimum | 1 mm/min |
Actuating speed,maximum | 3 m/s |
Note (Actuating speed) | Actuating speed with vertical actuating angle to switch axis |
Ambient conditions-Insulation values | |
Rated insulation voltage Ui | 250V |
Rated impulse withstand voltage Uimp | 4kV |
Electrical data | |
Thermal test current | 16A |
Utilisation category AC-15 | 250 VAC |
Utilisation category AC-15 | 4A |
Switching element | NO contact,NC contact |
Note (Switching element) | galvanically separated contact bridges |
Switching principle | Snap action |
Bounce duration,maximum | 5ms |
Switchover time,maximum | 35 ms |
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