Limit switch with built-in Bestact contacts
(R25) for excellent environmental resistance.
(R25) for excellent environmental resistance.
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Limit Switches
Heavy Duty Industrial Limit Switch PSKU-□R25C□ PIKU-□R25C□ (Medium-Capacity Type)
▼Features
◼ These types of limit switches have been used for many years as position detection switches for cranes and trolleys in steel, chemical plant and cement manufacturing facilities.
◼ These limit switches use Bestact (R25) for the built-in contacts, and are hardly affected by environmental influences such as dust, gas, high temperature and high humidity, and have excellent contact reliability.
◼ These limit switches are suitable for a wide range of applications, from micro current circuits at signal level to power circuits for inductive load switching.
◼ These types of limit switches have been used for many years as position detection switches for cranes and trolleys in steel, chemical plant and cement manufacturing facilities.
◼ These limit switches use Bestact (R25) for the built-in contacts, and are hardly affected by environmental influences such as dust, gas, high temperature and high humidity, and have excellent contact reliability.
◼ These limit switches are suitable for a wide range of applications, from micro current circuits at signal level to power circuits for inductive load switching.
PIK□ series and PSK□ series with air contacts built into the ▼ contact section are also available.
Please consider this when you need to directly control equipment with a large load capacity. For details, please download the catalog from here.
If the installation location is in an environment with corrosive gas or humidity that may cause contact failure of the air contacts, consider the PSKU-□R25C□□ and PIKU-□R25C□□ models with built-in Bestact contacts on this page.
Please consider this when you need to directly control equipment with a large load capacity. For details, please download the catalog from here.
| AC100-110V 10A | AC200-220V 10A | AC400-440V 5A | AC500-550V 3A |
| DC100-110V 3A | DC200-220V 2A |
If the installation location is in an environment with corrosive gas or humidity that may cause contact failure of the air contacts, consider the PSKU-□R25C□□ and PIKU-□R25C□□ models with built-in Bestact contacts on this page.
▼Warning about this counterfeit products
In recent years, it has been reported that many counterfeit products of our products have been found in many places around the world, especially in the East Asia region. These counterfeit products are being handled by companies that are not our sales representatives or authorized distributors, or through Internet trading sites in which we are not involved.
Please check here for details.
In recent years, it has been reported that many counterfeit products of our products have been found in many places around the world, especially in the East Asia region. These counterfeit products are being handled by companies that are not our sales representatives or authorized distributors, or through Internet trading sites in which we are not involved.
Please check here for details.
Ratings and Specifications
Type of Actuation | Roller Lever | Cylindrical Roller Lever ( Horizontal Mounting ) | Cylindrical Roller Lever ( Vertical Mounting ) | Pull Lever | Pull Lever ( Crane Drum Over-Winding Protection ) | Fork Lever | Pull Lever ( One Direction Pull ) | Pull Lever ( Both Direction Pull ) |
 |  |  |  |  |  | |  | |
Type*¹ | PSKU-□R25C | PSKU-□R25CB | PSKU-□R25CV | PSKU-□R25CE | PSKU-□R25CO | PSKU-□R25C | PIKU-□R25CE | PIKU-□R25CET22 |
Switch Action | Spring return | Maintained | ||||||
Incorporated Bestact | R25 | |||||||
Contact performance | Refer to the BESTACT Type R25 & R15 specification table | |||||||
Contact Arrangement Available | 2NO 1NO1NC 2NC | 2NO 1NO1NC 2NC | 2NO *⁴ 1NO1NC | 2NO 1NO1NC 2NC | ||||
Common Specifications | ・ Enclosure: Almost equivalent to IP56 *7 ・ Operating Temperature: -10 to +80℃ (With no freezing or condensation) ・ Rated Insulation Voltage: 250VAC (50/60Hz) ・ Storage Temperature: -20 to +80℃ (With no freezing or condensation) ・ Vibration Resistance: 9.8m/s² ｛1G｝ (10 to 100Hz) ・ Maximum recommended speed of actuation: 100m/min *5 *6 ・ Shock Resistance(Erroneous Operation): 59m/s²｛6G｝ ・ Operating Frequency: 1200 times/hour ・ Shock Resistance(Breakdown): 980m/s² ｛100G｝ ・ Mechanical Life: 5,000,000 operations or greater ・ Insulation Resistance: 5MΩ or greater (with 500VDC Megger) ・ Lead-in method: G 1/2 (13 diameter hole) ・ Withstand Voltage (50/60Hz) 1500VAC for 1 minute (Across Open Contacts: 500VAC) | |||||||
Approx. Weight | 2kg | 4kg | 4kg | 2kg | 5kg | 2kg | 2kg | 2.5kg |
Note: ＊1. Types with□such as PSKU-□R25C can vary depending on the contact arrangement.
2NO:[200] 2NC:[020] 1NO1NC:[110]
2. Do not change of NO contact to NC contact.
3. For DC circuit, connect odd-numbered terminals to ⊕ and even-numbered terminals to ⊖ .
＊4. When contact arrangement is 2NO, specify the operating direction. If it should turn on in clockwise operation, specify “R”
in the square, in counter clockwise operation, specify “L”.
＊5. Type PSKU-＊R25CO for crane drum over-winding protection doesn't have speed restriction. However, after the contact
is turned off, effective measures should be taken to prevent the effect of accidental turning on due to shock or vibration.
＊6. As for type PIKU-＊R25C□ , minimum operating speed can vary depending on operating conditions. For more information, contact Yaskawa.
7. These switches provide IP56 when they are wired, piped and mounted correctly. They cannot provide IP56 if they are not wired, piped
and mounted correctly.
2NO:[200] 2NC:[020] 1NO1NC:[110]
2. Do not change of NO contact to NC contact.
3. For DC circuit, connect odd-numbered terminals to ⊕ and even-numbered terminals to ⊖ .
＊4. When contact arrangement is 2NO, specify the operating direction. If it should turn on in clockwise operation, specify “R”
in the square, in counter clockwise operation, specify “L”.
＊5. Type PSKU-＊R25CO for crane drum over-winding protection doesn't have speed restriction. However, after the contact
is turned off, effective measures should be taken to prevent the effect of accidental turning on due to shock or vibration.
＊6. As for type PIKU-＊R25C□ , minimum operating speed can vary depending on operating conditions. For more information, contact Yaskawa.
7. These switches provide IP56 when they are wired, piped and mounted correctly. They cannot provide IP56 if they are not wired, piped
and mounted correctly.
Dimensions (㎜)
