Limit switch SERIE MP720
A sealed position switch, with positive opening operation, dual breaking, with direct connection by cable moulded into the housing. The degree of safety sought on a machine often depends on the reliability of a switch, especially during an emergency shutdown.
The MP720 series provides this guarantee thanks to the switch’s positive opening operation and the rigid mechanical linkage between the controller and the contact bridge causing the breaker circuit to open.
Descriptions |
Approval | EN 947-5-1 |
Housing | Glass fiber reinforced |
Mechanism |
Forced break Slow action |
Contact | Fine Silver, Gold contact upon request |
Circuit | 1 NO + 1NC |
Termination |
Cable moulded 0.75 mm2 PVC -20°C to 70°C PUR -40°C to 90°C SI -40°C to 130°C |
Actuator | Variety of operation heads Stainless steel |
Degree of protection |
IP67 |
Power rating |
AC-15 3A DC-13 0.27A |
Thermal current | 6A |
Dimensions | 50 x 30 x 16 mm |
Operating temperature range |
-25°C to +70°C (suited for -40°C to +130°C) |
Mechanical life | 10 x 106 cycles |
Actuators |
DOMED PLUNGER
Switching diagram
In free position, a clearance of 0.5 to 1.0 mm has to be left from the top of the actuating button.
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Type 1G : Metal plunger | ||
Actuating force Fa max. (N) Positive operating force Fmp min (N) Free position Pr (mm) Positive openning operation position Pmp max. (mm) |
4.0 10.0 20.5 ± 0.5 16.60 |
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Type 1GA : Metal plunger with nuts | ||
Actuating force Fa max. (N) Positive operating force Fmp min (N) Free position Pr (mm) Positive openning operation position Pmp max. (mm) |
4.0 10.0 35.0 ± 0.5 31.10 |
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ROLLER PLUNGER
Switching diagram
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Type 1GLA : Metal roller plunger | ||
Actuating force Fa max. (N) Positive operating force Fmp min (N) Free position Pr (mm) Positive openning operation position Pmp max. (mm) |
4.0 10.0 30.0 ± 0.5 26.10 |
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Type 1GTA : Metal roller plunger | ||
Actuating force Fa max. (N) Positive operating force Fmp min (N) Free position Pr (mm) Positive openning operation position Pmp max. (mm) |
4.0 10.0 30.0 ± 0.5 26.10 |
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Type 1GALA/1GATA : Metal longitudinal / transverse roller plunger with nuts | ||
Actuating force Fa max. (N) Positive operating force Fmp min (N) Free position Pr (mm) Positive openning operation position Pmp max. (mm) |
4.0 10.0 47.0 ± 0.5 43.10 |
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ROLLER LEVER 4G
Switching diagram (4G..)
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Type 4GXXP : Lever with nylon roller | ||
Actuating force Fa max. (N) Positive operating force Fmp min (N) Free position Pr (°) Positive openning operation position Pmp max. (°) |
1.0 2.5 0 58 |
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Switching diagram |
Cable isolation | Polyvinyl chloride | Polyurethane | Silicone |
Code in the reference of the article | PVC | PUR | SI |
Element of contact Za form |
Terminology - Samples applications |
Pmp | Positive opening operation position. Actuator position at the point where the positive opening of the contacts is achieved. Position of the actuator when the positive opening operation on the circuitbreaking contacts has been achieved. Position in, which pre-determined dielectric voltage rating requirements is met between the open contacts in the switchable circuit. |
smp | Positive opening operation travel. The minimum distance between the start of the movement of the actuator and the position where the positive opening of the contacts is achieved. Distance between the rest position and the positive opening operation position. |
Fmp | Positive opening operation force. The actuating force applied to the actuator to cause it to achieve the positive opening operation. |
Sliding door (lateral movement) In this case also the switch has to be operated as the door opens.Care has to be taken to ensure that the positive opening operation switch remains in that position during the full open travel of the door. Protective doors of this type are generally used on machines operating at high revolutions with cooling fluids. Consequently, it is essential in such applications that a switch with IP67 protection be used.
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Hinged door (rotating)
The problem with fitting a positive opening operation position switch to a hinged door is that the switch has to be operated as the door opens. Hence, the switch cannot be operated directly by the door but rather via a notched cam.
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Information commande |
MP72 | 0 | - 0 - |
1G | / | 4 | 2 |
PVC | |
Contact material 0: Silver contact 1: Gold contact |
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Actuator 1G: Metal plunger 1GA : Metal plunger with nuts 1GLA : Metal roller plunger 1GTA : Metal roller plunger 1GALA : Metal plunger longitudinal roller with nuts 1GATA : Metal plunger transverse roller with nuts 4GXXP : Lever with nylon roller |
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Number of wire 4 : 4 Wires section 0.75 mm2 / 19 AWG |
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Length of cable 1 : Length 1m 2 : Length 2m 4 : Length 4m |
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Cable material PVC : Polyvinyl chloride PUR : Polyurethane SI : Silicone |