ALE72B24 Equivalent & Substitute Parts

Part Overview

The ALE72B24 is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with a 24VDC coil. This through-hole mounted relay is rated for 16A at 277VAC maximum switching voltage and is designed for non-latching applications. The part is currently obsolete, making identification of functionally equivalent substitutes necessary for ongoing system maintenance and new designs requiring compatible relay solutions.

Substiute Parts

ALE72B24

Panasonic Electric WorksIn Stock: 1088ALE72B24 Datasheet

Current PartRFQ

PCK-124D2M,000

TE Connectivity Potter & Brumfield RelaysIn Stock: 914PCK-124D2M,000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALE72B24 is determined by strict alignment with the following critical parameters:

• Coil Voltage: Must be 24VDC
• Contact Configuration: Must be SPST-NO (1 Form A)
• Current Rating: Must be 16A minimum
• Maximum Switching Voltage: Must support 277VAC
• Mounting Type: Must be Through Hole
• Termination Style: Must be PC Pin, Quick Connect - 0.187" (4.7mm)
• Coil Type: Must be Non Latching

The PCK-124D2M,000 from TE Connectivity Potter & Brumfield Relays meets all mandatory substitution criteria. Both relays share identical coil voltage, contact form, current rating, switching voltage capability, mounting configuration, and termination style. Operational timing and coil resistance differ between the two models but remain within acceptable ranges for general purpose relay applications.

Parameter Comparison

Engineering Selection Recommendations

The PCK-124D2M,000 is a direct functional substitute for the obsolete ALE72B24. Both relays are certified to the same international standards (CSA, TUV, UR, VDE for ALE72B24; equivalent certifications apply to PCK-124D2M,000) and share identical electrical switching characteristics for the primary application parameters.

The PCK-124D2M,000 offers the advantage of active product status, ensuring continued availability and supply chain reliability. The higher coil current (20.8 mA versus 8.3 mA) and lower coil resistance (1.15 kOhms versus 2.88 kOhms) reflect design differences between manufacturers but do not affect functional compatibility in standard 24VDC relay circuits. The faster release time (10 ms versus 25 ms) of the TE Connectivity relay may provide improved switching performance in time-sensitive applications.

The operating temperature range of the PCK-124D2M,000 (-30°C ~ 85°C) is narrower than the ALE72B24 (-40°C ~ 85°C) at the lower extreme. Applications requiring operation below -30°C must retain the original ALE72B24 specification or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the PCK-124D2M,000 be used as a direct replacement for the ALE72B24 in existing circuit boards?

A: Yes. Both relays share identical coil voltage (24VDC), contact configuration (SPST-NO), current rating (16A), switching voltage capability (277VAC), mounting type (Through Hole), and termination style (PC Pin, Quick Connect - 0.187"). Physical and electrical compatibility is confirmed for standard applications.

Q: What are the differences in coil current between these two relays?

A: The ALE72B24 draws 8.3 mA while the PCK-124D2M,000 draws 20.8 mA. This difference reflects different coil designs and resistance values (2.88 kOhms versus 1.15 kOhms respectively). The higher coil current of the TE Connectivity relay requires verification that the driving circuit can supply the additional current without exceeding design limits.

Q: Are there temperature range limitations when substituting the PCK-124D2M,000?

A: The PCK-124D2M,000 operates from -30°C to 85°C, while the ALE72B24 operates from -40°C to 85°C. Applications requiring operation below -30°C cannot use the TE Connectivity relay as a substitute.

Q: How do the switching times compare?

A: Both relays have identical operate time (20 ms). The PCK-124D2M,000 has a faster release time (10 ms) compared to the ALE72B24 (25 ms). This faster release may improve performance in applications requiring rapid de-energization.

Q: What is the inventory status of these relays?

A: The ALE72B24 has 982 pieces in stock but is obsolete. The PCK-124D2M,000 has 878 pieces in stock and is an active product with ongoing manufacturer support.