• LEM LF 505-S/SP13 Current Transducer | High-Precision Current Measurement Instrument | Maximum Range 5A | 24V DC to 240V AC | SP13 Mounting Bracket - LEM
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LEM

LEM LF 505-S/SP13 Current Transducer | High-Precision Current Measurement Instrument | Maximum Range 5A | 24V DC to 240V AC | SP13 Mounting Bracket

LEM LF 505-S/SP13 Current Transducer | High-Precision Current Measurement Instrument | Maximum Range 5A | 24V DC to 240V AC | SP13 Mounting Bracket

$224.82 USD
$224.82 USD $224.82 USD
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MPN LF 505-S/SP13
model LF 505-S/SP13
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Description


LEM LF 505-S/SP13 Current Transducer | High-Precision Current Measurement Instrument | Maximum Range 5A | 24V DC to 240V AC | SP13 Mounting Bracket

The LEM LF 505-S/SP13 Current Transducer is a reliable high-precision current measurement device with a wide voltage range and durable design.

The LEM LF 505-S/SP13 Current Transducer is a high-precision instrument designed for accurate current measurement in various industrial and laboratory applications. It features a wide voltage range, excellent measurement accuracy, and a durable design. The SP13 mounting bracket allows for easy installation on different surfaces, making it ideal for use in harsh environments. This device is perfect for professionals who require reliable and precise current measurements in their work.

Engineer's Quick Brief

  • Closed-loop Hall-effect current transducer designed for high-accuracy AC, DC, and pulsed current measurement.
  • Galvanic isolation between primary and secondary circuits improves safety in industrial drives, UPS systems, renewable energy converters, and power electronics.
  • High linearity and fast response make the LF 505-S/SP13 suitable for precision current feedback and protection applications.
  • Typical application: Industrial motor drives and power conversion systems requiring accurate current monitoring and control-loop feedback.

SEO Introduction

The LEM LF 505-S/SP13 is a precision closed-loop Hall-effect current transducer engineered for accurate measurement of AC, DC, and complex waveform currents. Manufactured by LEM, a recognized leader in electrical measurement technology, the LF series is widely deployed in industrial automation, motor drives, UPS systems, power supplies, renewable energy equipment, welding systems, and energy conversion applications.

The LF 505-S/SP13 utilizes magnetic compensation technology to deliver excellent accuracy, fast dynamic response, low offset drift, and reinforced galvanic isolation. Its SP13 mounting configuration simplifies installation in control cabinets and power electronic assemblies.

Industry keywords: Current Transducer, Hall Effect Sensor, Closed Loop Current Sensor, Industrial Current Measurement, Galvanic Isolation, Motor Drive Feedback.

Technical Specifications

Parameter Specification
Manufacturer LEM
Series LF Series
Model LF 505-S/SP13
Technology Closed-Loop Hall Effect (Compensated)
Measured Quantity AC / DC / Pulsed Current
Nominal Primary Current (IPN) 500 A
Conversion Ratio 1 : 5000
Nominal Secondary Current (ISN) 100 mA
Supply Voltage ±15 V DC (typical)
Isolation Principle Magnetic Galvanic Isolation
Measurement Type Bidirectional Current Measurement
Response Characteristic Fast Dynamic Response
Linearity High Precision Compensation Technology
Mounting Style SP13 Mounting Bracket
Applications Drives, UPS, Renewable Energy, Industrial Power Supplies, Welding Equipment

Application Matrix

Industry Application Value Delivered
Motor Drives Current Feedback Loops Stable Torque and Speed Control
UPS Systems Input/Output Current Monitoring Protection and Efficiency Improvement
Renewable Energy Inverter Current Measurement Accurate Energy Conversion Control
Welding Equipment Output Current Feedback Improved Process Stability
Industrial Automation Power Monitoring Equipment Protection and Diagnostics

Koeed Current Conversion Calculator

LF 505-S/SP13 Current Conversion Calculator







Troubleshooting & FAQ

How is the output current calculated?

The LF 505-S/SP13 uses a compensation ratio of approximately 1:5000. The secondary current is obtained by dividing the measured primary current by the conversion ratio.

Can the transducer measure both AC and DC current?

Yes. Closed-loop Hall-effect technology allows accurate measurement of AC, DC, and pulsed current signals.

How is the voltage output obtained?

A burden resistor (Rm) is connected to the secondary output. Output voltage is calculated as: Vout = Is × Rm.

Why is galvanic isolation important?

Isolation protects control electronics from high-voltage power circuits while maintaining accurate current feedback.

What applications commonly use LF 505-S/SP13?

Industrial drives, inverter systems, UPS equipment, renewable energy converters, welding systems, and power monitoring platforms.

Cross-Reference Guide

The LF 505-S/SP13 belongs to the LEM LF compensated current transducer family and is commonly evaluated alongside other LF-series current sensors with similar installation concepts and current ranges.

  • LEM LF 205-S – Lower nominal current range.
  • LEM LF 305-S – Medium-current measurement applications.
  • LEM LF 505-S – Standard 500A nominal current version.
  • LEM LF 1005-S – Higher-current industrial systems.
  • LEM LA Series – Alternative compensated Hall-effect current measurement family.

About Koeed Automation

Expert Supply Solutions for Global Industrial Electronics

At Koeed.com, we are professional architects of the industrial electronics supply chain. We specialize in providing high-performance PLCs, HMIs, Servo Motors, Drives, and Converters to ensure that modern manufacturing operations remain efficient, reliable, and future-proof in 2026’s competitive landscape.

🛡️ Certified Quality

We source only 100% authentic industrial hardware from global category leaders. Every component undergoes a rigorous verification process to meet Industry 4.0 reliability standards.

⚙️ Engineering Domain

Our experts provide more than just parts; we offer technical insight. We assist in complex product selection and compatibility audits for both legacy system upgrades and new installations.

🌐 Rapid Global Logistics

Time is money in industrial automation. Our optimized supply network ensures that critical components reach your facility quickly, significantly reducing unplanned downtime and operational loss.

Strategic Global Portfolio: Siemens, Omron, FANUC, Schneider Electric, Mitsubishi, Yaskawa, Allen-Bradley, and other elite industrial brands.

Supporting your vision for a smarter, more efficient industrial future.

Alternative Names


  • LEM LF 505-S
  • LEM Current Transducer SP13
  • LEM 505-A
  • LEM 505-S Mounting Bracket
  • LEM LF 505 Mounting Kit

Special Reminder

Important

If you have any questions about product information and prices, please feel free to contact us by email or WhatsApp. We will respond quickly.

  • Business Days Only (Monday through Saturday)
  • It takes up to 10 days from the time of ordering (excluding Saturdays and Sundays) to the time of delivery to your designated location. Worldwide delivery.
  • Within 3 days after placing the order, we will send you photos and videos of the product via email or WhatsApp for confirmation

International shipping - items may be subject to customs processing depending on the item's customs value.
Sellers declare the item's customs value and must comply with customs declaration laws.
As the buyer, you should be aware of possible:

  • Delays from customs inspection.
  • Import duties and taxes which buyers must pay.
  • Brokerage fees payable at the point of delivery.

Shipping Policy

Global Delivery

We ship to customers all over the world. Our primary logistics providers are DHL, UPS, TNT, FedEx, and EMS.

Processing Time

All orders are processed within 72 hours of purchase. Please note that this applies to business days only.

Shipping Rates & Delivery Estimates

Shipping charges for your order will be calculated and displayed at checkout. Delivery estimates are within 7-14 days. Please note that these shipping times are only estimates and unfortunately, cannot be guaranteed.

Shipment Confirmation & Order Tracking

You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.

Customs, Duties, and Taxes

Please note, international shipping services do vary from country to country. To find out the exact services that are available, please put in your full address at checkout. Shipping internationally does mean that you may be required to pay customs and import taxes. All international customers are responsible for the customs rates within their own country. For further information, we recommend contacting your local customs office.

Damages

We take every reasonable precaution to ensure that products are not damaged. If the item is damaged in transit, please immediately contact us. We are not liable for any products damaged or lost during shipping. If you received your order damaged, please contact the shipment carrier to file a claim. Please save all packaging materials and damaged goods before filing a claim.

Force Majeure

When encountering with force majeure, the processing of orders will be delayed. Nevertheless, it is ensured that your order will be processed in a fast manner when weather permits.

Address Verification

Please verify you have the correct shipping address on your order PRIOR to making payment as this is the address we will ship to.

Return Policy

For more information, visit our Return Policy page.

International shipping - items may be subject to customs processing depending on the item's customs value.

Sellers declare the item's customs value and must comply with customs declaration laws.
As the buyer, you should be aware of possible:
• Delays from customs inspection.
• Import duties and taxes which buyers must pay.
• Brokerage fees payable at the point of delivery.

Contact Us

If you have any questions about your order, please contact us at moritta@koeed.com.

Return Policy

Return and Refund Policy

We want you to be completely satisfied with your purchase on our store. If for any reason you are not entirely satisfied, we're here to help!

Returns

You have a generous 30 calendar days to return an item from the date you received it. To be eligible for a return, ensure the item is in its original, unworn, and unused condition with tags and packaging intact. Retain your receipt or proof of purchase for eligibility. Please note that certain items are non-returnable like perishables, custom products, personal care goods, hazardous materials, flammable liquids, and gases. Reach out for clarifications on specific items.

Return Process

Commence the return process by reaching out to us at moritta@koeed.com. Upon approval, we will furnish you with a return shipping label and detailed instructions for dispatching your package. Unnotified returns will not be accepted.

Damages and Issues

Kindly review your order upon delivery. Notify us promptly if it arrives defective, damaged, or incorrect. We will address the matter swiftly.

Exchanges

Facilitate a swift exchange by returning the original item once approved and making a new purchase.

EU 14-Day Cooling Off Period

EU-bound shipments allow a 14-day cancellation or return period without justification. Conditions mirror standard returns.

Refunds

Upon receiving and inspecting your return, we’ll inform you of the refund status. Approved refunds are automatically processed within 10 business days via the initial payment method. Allow time for financial institutions to finalize the refund. For delays exceeding 15 business days post-approval, contact us at moritta@koeed.com.

Shipping

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Contact Us

If you have any questions on how to return your item to us, feel free to contact us at moritta@koeed.com.

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