AT 150 B5 Current Sensor Equivalent & Substitute Parts

Part Overview

The AT 150 B5 is a current transformer sensor manufactured by LEM USA Inc., designed for AC current measurement applications up to 150A. This module integrates current sensing with signal conditioning in a single chassis-mount unit, providing ratiometric output suitable for industrial and control system applications.

The AT 150 B5 is classified as obsolete. Locating equivalent or substitute components is necessary to support system maintenance, repair, and new design implementations where this sensor specification is required.

Substiute Parts

AT 150 B5

LEM USA Inc.In Stock: 839AT 150 B5 Datasheet

Current PartRFQ

AT 150 B10

LEM USA Inc.In Stock: 1070AT 150 B10 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT 150 B5 is determined by the following critical parameters:

Core Compatibility Parameters:

• Current sensing capacity: 150A
• Measurement type: AC
• Sensor architecture: Transformer with conditioning
• Number of channels: 1
• Frequency response: 50/60 Hz
• Accuracy specification: ±1.5%
• Linearity: ±0.5%
• Operating temperature range: -20°C to 60°C
• Polarization: Bidirectional
• Mounting configuration: Chassis Mount
• Supply method: Self Powered

Variable Parameters Allowing Substitution:

• Output voltage range (0V–5V vs. 0V–10V)
• Product status (Obsolete vs. Active)
• Packaging format (Module designation maintained)
• Inventory availability

The AT 150 B5 can be substituted with the AT 150 B10 based on identical core electrical and mechanical specifications. The primary difference is the output voltage range, which shifts from 0V–5V to 0V–10V. This difference requires verification of downstream signal conditioning or analog-to-digital conversion circuits in the application.

Parameter Comparison

Engineering Selection Recommendations

AT 150 B10 as Primary Substitute:

The AT 150 B10 is the manufacturer-recommended substitute for the AT 150 B5. Both sensors share identical electrical performance characteristics, mechanical mounting, and environmental specifications. The AT 150 B10 holds active product status with confirmed inventory availability (999 pieces), whereas the AT 150 B5 is obsolete.

Output Voltage Consideration:

The AT 150 B10 provides a 0V–10V output range compared to the AT 150 B5's 0V–5V range. This difference requires assessment of the receiving signal conditioning circuit, analog-to-digital converter input range, or control system input specifications. If the application circuit is designed for 0V–5V input, the AT 150 B10 output will require scaling or recalibration of the measurement system.

Compliance and Regulatory Status:

Both the AT 150 B5 and AT 150 B10 maintain RoHS compliance and REACH unaffected status. Both are classified under ECCN EAR99 and HTSUS 9030.33.3800. No regulatory barriers exist to substitution.

Availability and Supply Chain:

The AT 150 B10 is actively manufactured and stocked, supporting long-term supply chain continuity. The AT 150 B5, being obsolete, presents supply risk for future maintenance or repair requirements.

Frequently Asked Questions (FAQ)

Q: Can the AT 150 B10 directly replace the AT 150 B5 without circuit modification?

A: The AT 150 B10 is mechanically and electrically compatible with the AT 150 B5 for all core sensing functions. However, the output voltage range differs (0V–10V vs. 0V–5V). Direct replacement without circuit modification is possible only if the downstream signal conditioning or analog input accepts the full 0V–10V range. If the receiving circuit is calibrated for 0V–5V input, output scaling or recalibration is required.

Q: What are the key parameters that must remain identical for substitution?

A: Current sensing capacity (150A), measurement type (AC), sensor architecture (transformer with conditioning), channel count (1), frequency response (50/60 Hz), accuracy (±1.5%), linearity (±0.5%), operating temperature range (-20°C to 60°C), polarization (bidirectional), and mounting type (chassis mount) must all remain identical. These parameters define the functional equivalence of the sensor.

Q: Why is the AT 150 B5 obsolete?

A: The AT 150 B5 is classified as obsolete by the manufacturer. The AT 150 B10 represents the current active product offering in this sensor category. Obsolescence typically reflects manufacturer discontinuation in favor of newer or improved product variants.

Q: Are there any RoHS or regulatory compliance differences between the two sensors?

A: No. Both the AT 150 B5 and AT 150 B10 are RoHS compliant, REACH unaffected, and classified under the same ECCN and HTSUS codes. No regulatory barriers exist to substitution.

Q: What is the significance of the output voltage range difference?

A: The AT 150 B5 outputs 0V–5V, while the AT 150 B10 outputs 0V–10V. This difference affects the resolution and sensitivity of measurement systems. A 0V–10V output provides finer resolution when digitized by a fixed-bit analog-to-digital converter. However, if the receiving circuit expects 0V–5V, the AT 150 B10 output will saturate or require external scaling resistors or software calibration adjustment.

Q: Is the AT 150 B10 available in the same packaging as the AT 150 B5?

A: Both sensors are supplied as modules in chassis-mount configuration. The AT 150 B10 is available in bulk packaging, whereas the AT 150 B5 packaging designation is listed as a dash. Both maintain identical mechanical form factor and mounting interface.

Q: What is the response time for both sensors?

A: Both the AT 150 B5 and AT 150 B10 have a response time of 300 milliseconds. This parameter is identical and does not affect substitution decisions.

Q: Can the AT 150 B10 measure bidirectional AC current like the AT 150 B5?

A: Yes. Both sensors are specified as bidirectional, meaning they can measure AC current flow in both directions. This characteristic is maintained in the substitute part.