LA 55 & LA 100
For the electronic measurement of currents: DC, AC, pulsed..., with galvanic separation between the primary circuit and the secondary circuit.
LA 55, LA 100 - Current sensors
The LA 55 and LA 100 product families consist of closed-loop Hall effect current sensors, purpose-built for measuring direct current (DC), alternating current (AC), and pulse current. They can respectively measure 25-50 and 100 Arms and incorporate galvanic isolation for enhanced safety.
LA 55 and LA 100 current sensors are intended for installation onto printed circuit boards (PCB).
Their design features a 12.7 x 7 mm aperture for accommodating plug-type connections through the primary conductor. These parts deliver outstanding precision and swift response times, making them well-suited for industrial applications.
LA 55, LA 100 – Features and benefits
Main characteristics
- Closed loop (compensated) current transducer using the Hall effect
- Insulating plastic case recognized according to UL 94-V0
Benefits
- Excellent accuracy
- Very good linearity
- Low temperature drift
- Optimized response time
- Wide frequency bandwidth
- No insertion losses
- High immunity to external interference
- Current overload capability
Typical applications
LA 55 and LA 100 current sensors are designed for industrial applications:
- AC variable speed drives and servo motor drives
- Static converters for DC motor drives
- Battery supplied applications
- Uninterruptible Power Supplies (UPS)
- Switched Mode Power Supplies (SMPS)
- Power supplies for welding applications
LEM LA 55, LA 100 – Download & Technical Characteristic
| Product | Order | Document | Primary nominal RMS voltage | Supply Voltage range | Op. Temperature |
|---|---|---|---|---|---|
| LA 25-P |
| Datasheet 3D | 12,5 A | 12 to 15 | -25 to 85°C |
| LA 55-P |
| Datasheet 3D | 50 A | 12 to 15 | -40 to 85°C |
| LA 55-P/SP1 |
| Datasheet 3D | 50 A | 12 to 15 | -40 to 85 °C |
| LA 55-P/SP23 |
| Datasheet | 50 A | 12 to 15 | -40 to 85 °C |
| LA 55-TP |
| Datasheet 3D | 50 A | 12 to 15 | -40 to 85 °C |
| LA 55-TP/SP1 |
| Datasheet | 50 A | 12 to 15 | -40 to 85°C |
| LA 55-TP/SP27 |
| Datasheet | 50 A | 12 to 15 | -40 to 85°C |
| LA 100-P | Datasheet | 100 A | 12 to 15 | -40 to 85 °C | |
| LA 100-P/SP13 | Datasheet | 100 A | 12 to 15 | -25 to 70 °C | |
| LA 100-TP | Datasheet | 100 A | 12 to 15 | -40 to 85 °C |
LA 55 & LA 100 sensors – ASK FOR SAMPLES / QUOTATIONS
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