Image is for illustrative purposes only. Please refer to product description.

Additional images

  • Manufacturer:
  • Newark Part No.: 01P0386
  • Manufacturer Part No LA 55-P

Product Overview

The LA 55-P from LEM is a current transducer. It features instantaneous output, excellent accuracy, very good linearity, low temperature drift, optimized response time, wide frequency bandwidth, no insertion losses, high immunity to external interference and current overload capability. This current transducer is used for the electronic measurement of currents (DC, AC, pulsed, mixed) with galvanic separation between the primary circuit and the secondary circuit. It is mainly used in 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) and power supplies for welding applications.
  • Closed loop current transducer using the hall effect technology
  • Primary nominal current of 50A
  • 0.65% accuracy
  • Primary current measuring range is ±70A
  • Supply voltage range from ±12V to ±15V
  • Conversion ratio is 1 : 1000
  • Secondary nominal rms current is 50mA
  • Insulated plastic case recognized according to UL 94-V0
  • Operating temperature range from -40°C to 85°C
  • PCB mounting


Industrial; Consumer Electronics; Portable Devices; Motor Drive & Control; Power Management
Back to top

Product Specifications, Documents & More

  • Accuracy: ± 0.65%
  • Accuracy %: 0.65%
  • Current Measuring Range AC: -70A to 70A
  • Current Measuring Range DC: -70A to 70A
  • Response Time: 1µs
  • SVHC: To Be Advised
  • Sensor Output: Closed Loop
  • Supply Voltage DC Max: 15V
  • Supply Voltage DC Min: 12V


Availability:  286

  • 286 in stock for same day shipping
Check stock and lead times
  • 75 Further stock expected to ship on Dec 20, 2015
  • More stock available week commencing 1/25/16

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $34.18 $34.18



Quantity List Price
1 - 9 $34.18
10 - 24 $27.30
25 - 99 $21.97
100 - 499 $18.33
500+ $17.03

Legislation and Environmental

Back to top

Similar Products

Find products functionally similar to this one. Select one of the following links, and you will be taken to a product group page that presents all products in this category that share the given attribute.

Back to top

Customer Reviews

Customer Q&A Exchange

(There is 1 question : 1 answer on this product)

Product Q&A

Ask your questions. Share your answers.

Browse Q&A
Search Questions
Need Product Support?
If you need immediate technical support use Live Support or Contact Us.
This space is yours...
Use this space to Ask your peers product questions or Answer those questions posted by them.
To whom it may concern,

Thanks for your time. I am having a difficult time to understand the datasheet provided on the page. Do you guys have a more detailed explanation about this type of current transducer? For example, the circuit design of the connection about the current transducer and the test circuit.


Best wishes.
1 year, 11 months ago
0out of 0found this question helpful.
Was this helpful?(0)(0)


Please refer to below supplier link:

Its working principle is explained below:
you need to supply it with +/- 15V, and you read on the sense wire a proportional current. that current should be directed towards a resistors (as given in datasheet)

The voltage developed across the resistor (current * resistance) is the proportional voltage which you can use in your circuit.

The secondary current, or sense current, has a scaling given in the datasheet. if the primary senses 50 Amps peak, then your secondary sense current is 50/1000 = 0.005Amps peak. when directed to a 100 ohm resistor (of sufficient wattage rating) the voltage is 0.005 * 100 = 0.5V.
1 year, 11 months ago
0out of 0found this answer helpful.
Was this helpful?(0)(0)
1 of 1
  • 2015-06-11T15:21:09.056-05:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestionsanswers
  • loc_en_US, sid_01P0386, prod, sort_default
1 of 1
Back to top


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.
Back to top

Associated Products

Customers Also Bought