LEM LA 55-P is a compact closed-loop Hall-effect current transducer for accurate measurement of DC/AC/pulsed currents, providing an analog secondary current output (50 mA nominal) proportional to the primary current. It requires a dual ±12…15 V DC supply, offers wide -40…+85 °C operation, and includes high dielectric isolation (2.5 kV AC / 1 min)—making it well-suited for industrial drives, power supplies, welding equipment, and general power-electronics current feedback applications.
Description
Specification
Electrical Input/Output
| Output Current |
50 mA (secondary nominal, ISN) |
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Power & Protection
| Power Supply Requirement |
±12–15 V DC (±5%) |
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Environmental
| Operating Temperature Range |
-40 °C to +85 °C |
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Safety / compliance
| Isolation Rating |
Ud: 2.5 kV AC (50 Hz, 1 min), UNi: 5.7 kV impulse (1.2/50 µs), Creepage/Clearance: 5 mm, CTI: 600 (Group I) |
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