
HAX 1200-S Open-Loop Hall Effect Current Transducer
HAX 1200-S Product Overview
The HAX 1200-S is an open-loop Hall effect current transducer from LEM's HAX series, designed for the electronic measurement of DC, AC, and pulsed currents with galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). This panel-mount sensor is engineered for industrial applications requiring reliable, non-intrusive current measurement across a wide range.
Rated for 1200 A RMS nominal with a bidirectional measuring range of ±3600 A (3 x IPN), it outputs a ±4 V voltage signal at rated current. Accuracy is ±1% with ±1% linearity. Response time is <5 µs and frequency bandwidth is DC to 25 kHz. Supply voltage is ±15 V (±5%) with a maximum supply current of 15 mA. Insulation test voltage is 5 kV RMS (50Hz, 1 minute) with isolation resistance >1000 MΩ at 500 VDC. The sensor features a compact panel-mount design with 108 mm length, 62 mm width, and 25 mm height, and mass is approximately 450 g. Operating temperature range is -25°C to +85°C. Housing meets UL 94-V0 flame-retardant standards. Product status is Active and available for new designs.
HAX 1200-S Key Specifications
Rated current: 1200 A RMS
Measuring range: ±3600 A
Output signal: Instantaneous ±4 V
Supply voltage: ±15 V (±5%)
Accuracy: ±1%
Linearity: ±1%
Response time: <5 µs
Bandwidth: DC to 25 kHz
Maximum supply current: 15 mA
Insulation test voltage: 5 kV RMS (50Hz, 1 minute)
Insulation resistance: >1000 MΩ @ 500 VDC
Overload capacity: 30000 A
Operating temperature: -25°C to +85°C
Mass: 450 g
Mounting: Panel mount
Housing: UL 94-V0
Standards: EN 50178, IEC 61010-1
HAX 1200-S Key Advantages
The HAX 1200-S features an open-loop Hall effect design with a large measuring range of ±3600 A (3 x IPN), providing ample headroom for overload conditions. The 5 kV insulation ensures safe operation in high-voltage environments. The <5 µs response time and DC to 25 kHz bandwidth capture fast-switching transients with high fidelity. The insulating plastic case is recognized according to UL 94-V0 for flame-retardant protection. The sensor provides high immunity to external interference, low power consumption, and a compact space-saving design with only one design for a wide current ratings range.
HAX 1200-S Typical Applications
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications
Renewable energy systems and solar inverters
High-current industrial power monitoring
HAX 1200-S Why Choose the HAX 1200-S?
The HAX 1200-S combines a 1200 A rating, ±3600 A measuring range, ±1% accuracy, and panel-mount design in a compact package. Manufactured by LEM, a global leader in electrical measurement, it delivers reliable, high-current sensing for demanding industrial applications. The open-loop Hall effect technology provides high immunity to external interference with non-intrusive measurement, making it a preferred choice for engineers designing high-current power conversion and motor control systems. The product is active and available for new designs with a standard lead time of 10 weeks.
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