Safety Limit Switch
• Conforms to EN (TUV) standards corresponding to the CE marking
• Positive opening operation of NC (Normally Closed) contacts conforming to IEC /EN 60947-5-1 Double
• Double insulation makes ground terminal unnecessary (Bears marking)
• Wide standard operating temperature range: -25°C to 80°C
• Full range of actuator heads and levers suitable for safety applications
• Sealing up to IP 67
• Wide switch variations, (Snap action and slow action basic switches)
• International conduit size
The EP series safety limit switches conform to EN 50047 and have been developed to provide a range of options including plastic cases in various sizes, a choice of snap acting, slow break/make with 2 contact configurations and a choice of actuator heads. The EP series offers the option of rotating the head in 90° increments before installation to allow ease of mounting. Highly limit switches can be used in other applications other than guard doors, for example on moving machine beds, crane arms,lifts, elevators, etc.
Operation of these limit switches is achieved by the sliding action of the guard or other moving object deflecting the plunger or lever. For safety applications it is important that upon actuation, the guard or other moving objects should not pass completely over the switch and allow the plunger or lever to return to its original position.
| Standards | EN60947-5-1, UL508, EN50047, EN1088 |
| Approvals | TUV and CE marked for all applicable directives |
| Positive Opening Operation | NC Contact |
| Utilization Category | AC15 A600 |
| Min Current | 5V, 5mA, DC |
| Thermal Current (lth) | 10A |
| Rated Insulation Voltage | 600V AC |
| Rated Impulse withstand Volt | 2500V AC |
| Insulation Resistance | 100MΩ min.(DC 500V) |
| Contact Resistance | 25mΩ max.(Initial) |
| Max Switching Speed | 250mm/s |
| Max Switching Frequency | 6000 operation per hour |
| Enclosure Material | UL approved glass-filled polybutylene terephthalate |
| Roller Material | Various polymers |
| Enclosure Protection | IP 67 |
| Operating Temperature | Min -25°C (-18°F) Max 80°C (+176°F) |
| Pollution Degree | 3 |
| Protection Against Electric Shock | Class II (Double Insulation) |
| Mech. Life Expectancy | 1 x 107 Cycles min |
| Electrically Life Expectancy | 150,000 Cycle min |
| Vibration | IEC 68-2-6, 10-55Hz±1 Hz, Excursion: 0.35mm, 1 octave/min |
| Conduit Entry | Various (see Product Selection table) |
| Fixing | 4 x M5 |
> Product Selection
Item No. | Dimensions
| Unit: mm | ||||||||
| EP-20 Roller Arm Type | ||||||||
| Operating Characteristics | ||||||||
| Type | Contact Block | Operating travel (PT) |
PT2nd | Operating Force (OF) |
Positive Opening | Total Travel |
||
| Travel (min) |
Force (min) |
|||||||
| EP-x-1-20 | Slow 1NC/1NO | 30 | 41 | 6.5 N | 45 | 19.0 N | 80 | |
| EP-x-2-20 | Slow 2NC | 30 | - | 6.5 N | ||||
| EP-x-3-20 | Snap 1NC/1NO | 28 | - | 5.3 N | ||||
| EP-x-4-20 | Slow 2NC/1NO | 30 | 41 | 6.5 N | ||||
| EP-x-5-20 | Slow 3NC | 30 | - | 6.5 N | ||||
Item No. | Dimensions
| Unit: mm | ||||||||
| EP-21 Adjustable Roller Arm Type (Standard arm) | ||||||||
| Operating Characteristics | ||||||||
| Type | Contact Block | Operating travel (PT) |
PT2nd | Operating Force (OF) |
Positive Opening | Total Travel |
||
| Travel (min) |
Force (min) |
|||||||
| EP-x-1-21 | Slow 1NC/1NO | 30 | 41 | 6.5 N | 45 | 19.0 N | 80 | |
| EP-x-2-21 | Slow 2NC | 30 | - | 6.5 N | ||||
| EP-x-3-21 | Snap 1NC/1NO | 28 | - | 5.3 N | ||||
| EP-x-4-21 | Slow 2NC/1NO | 30 | 41 | 6.5 N | ||||
| EP-x-5-21 | Slow 3NC | 30 | - | 6.5 N | ||||
Item No. | Dimensions
| Unit: mm | ||||||||
| EP-31 Adjustable Roller Arm Type (Standard arm) | ||||||||
| Operating Characteristics | ||||||||
| Type | Contact Block | Operating travel (PT) |
PT2nd | Operating Force (OF) |
Positive Opening | Total Travel |
||
| Travel (min) |
Force (min) |
|||||||
| EP-x-1-31 | Slow 1NC/1NO | 30 | 41 | 5.2 N | 45 | 19.0 N | 80 | |
| EP-x-2-31 | Slow 2NC | 30 | - | 5.2 N | ||||
| EP-x-3-31 | Snap 1NC/1NO | 28 | - | 4.5 N | ||||
| EP-x-4-31 | Slow 2NC/1NO | 30 | 41 | 5.2 N | ||||
| EP-x-5-31 | Slow 3NC | 30 | - | 5.2N | ||||
Item No. | Dimensions
| Unit: mm | ||||||||
| EP-32 Roller Plunger Type | ||||||||
| Operating Characteristics | ||||||||
| Type | Contact Block | Operating travel (PT) |
PT2nd | Operating Force (OF) |
Positive Opening | Total Travel |
||
| Travel (min) |
Force (min) |
|||||||
| EP-x-1-32 | Slow 1NC/1NO | 2.2mm | 3.0 | 7.26 N | 3.2mm | 19.0 N | 6.0mm | |
| EP-x-2-32 | Slow 2NC | 2.2mm | - | 7.24 N | ||||
| EP-x-3-32 | Snap 1NC/1NO | 1.9mm | - | 6.71 N | ||||
| EP-x-4-32 | Slow 2NC/1NO | 2.2mm | 3.0 | 7.26 N | ||||
| EP-x-5-32 | Slow 3NC | 2.2mm | - | 7.24N | ||||
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