Polarized Relay and Permanent Magnetic Relay PMR
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Polarized Relay and Permanent Magnetic Relay PMR
Electromagnetic relays are commonly used in control systems, automation, power distribution, and telecommunications. They provide an efficient means of controlling circuits and switching electrical loads. EM relays are capable of handling both low and high power loads, making them suitable for a wide range of applications.
Expert advice, custommade solutions
We competently advise and support our customers in designing residual current devices. With our calculation programme for current transformers and our magnetic relay know-how, we offer technically optimised and economical package solutions.
- Calculation of optimal current transformer dimensions
- Determining the number of primary and secondary windings
- Electronic design of residual current devices
- Dimensioning of magnetic shield plates
- Advice for optimal coupling to the RCD switching mechanism
Depending on the requirements, we offer a variety of subassemblies, adapted individually to the needs of our customers.
- Adjustable magnetically
- Low sensitivity to external magnetic fields
- Plunger stroke ≥ 2.5 mm
- Customer-specific solutions
- Soldered-on electronics
- Several trigger impedances
- Two fastening methods
- Only one primary winding
- Short current path, low power dissipation
- Minimal transformer volumes
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| Characteristic | Symbol | Unit | Specification (Rated Current of RCD) | |
| ≤40A | ≥63A | |||
| Tripping current | mA | 7-8 | 1.8-2.2 | |
| Tripping Voltage | mV | 15-20 | 40-60 | |
| Rated actuating Power | S na | micro VA | 100 | 60-70 |
| Actuating Power( Operating Point) | S a | micro VA | 80 | 50 |
| AR - Power on delivery | S | micro VA | 100-120 | 60-80 |
| Impedence | Z | Ohms | 2.5-4.4 | 35-45 |
| Ohmic Resistance | R | Ohms | 1.4-1.6 | 8.7-8.9 |
| Thrust force | mm | h=0.5mm F≈0.7-0.8N | h=0.5mm F≈0.7-0.8N | |
| N | h=1.0mm F≈0.3-0.4N | h=1.0mm F≈0.3-0.4N | ||
| h=1.6mm F≈0.2-0.3N | h=1.6mm F≈0.2-0.3N | |||
| Limitation | mm | h=1.8-2.0mm | h=1.8-2.0mm | |
| Total Movement of Kicker | mm | 1.8 | 1.8 | |
| Force Required for Resetting of Relay | Centi Newton | 100-130 | 100-130 | |
| Recommended Restoring speed | Vr | m/Sec. | 0.5-0.8 | 0.5-0.8 |
| Operating Time (at F=50 Hz, 1.2 * S na) | Ta | m/Sec. | 20 | 20 |
| Designed Ambient temperature | oC | Centigrade | -110 | -110 |
| Life Expectancy | Cycles | > 5000 | > 5000 | |
| Climatic Test Requirement | IEC61008/EN61008 tested in conjuction with RCCB |
IEC61008/EN61008 tested in conjuction with RCCB |
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| Lenght of wire for connection | mm | 100 ±5 | 100 ±5 | |
Need more information?
Contact us to request pricing, availability and customization options.
