Sealed Roller Plunger Limit Switch
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Rugged Housing
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Reliable Action
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Enhanced Life
Product Description
Renew’s RL8 series miniature limit switches feature greater durability and resistance to harsh environments, up to 10 million operations of mechanical life, making them suitable for critical and heavy-duty roles where normal basic switches could not be used. The roller plunger actuator switch is ideal for applications requiring smooth actuation and reliable performance. Steel and plastic rollers with straight and cross direction are available for various applications.
Dimensions and Operating Characteristics
General Technical Data
| Ampere rating | 5 A, 250 VAC |
| Insulation resistance | 100 MΩ min. (at 500 VDC) |
| Contact resistance | 25 mΩ max. (initial value) |
| Dielectric strength | Between contacts of same polarity 1,000 VAC, 50/60 Hz for 1 min |
| Between current-carrying metal parts and ground, and between each terminal and non-current-carrying metal parts 2,000 VAC, 50/60 Hz for 1 min |
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| Vibration resistance for malfunction | 10 to 55 Hz, 1.5 mm double amplitude (malfunction: 1 ms max.) |
| Mechanical life | 10,000,000 operations min. (120 operations/min) |
| Electrical life | 300,000 operations min. (under the rated resistance load) |
| Degree of protection | General-purpose: IP64 |
Application
Renew’s miniature limit switches play a critical role in ensuring the safety, precision, and reliability of various devices across different fields. Here are some popular or potential application.
Escalators and Motorized Walkways
These limit switches play critical roles in ensuring safety and operational efficiency of escalators and motorized walkways. They are used to monitor and control various components, such as the position of steps, handrails, and access covers. For example, roller plunger limit switches can detect when an escalator step is misaligned or when a handrail is broken. If a problem is detected, the switch triggers an emergency stop, preventing accidents.
