OAC24A AC Output Module - Equivalent & Substitute Parts

Part Overview

The OAC24A is an AC output module manufactured by Sensata-Crydom, designed to switch AC loads up to 4.6A at voltages ranging from 24 to 280VAC, with a 24VDC control input. This module is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, redesign, and procurement planning. The module features hold-down screw mounting and operates with 8.33ms switching times for both turn-on and turn-off cycles.

Substiute Parts

OAC24A

Sensata-CrydomIn Stock: 1005OAC24A Datasheet

Current PartRFQ

70-OAC24A

Grayhill Inc.In Stock: 107870-OAC24A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 70-OAC24A manufactured by Grayhill Inc. qualifies as a direct substitute for the OAC24A based on the following critical parameters:

• Output Current Rating: Both parts are rated for 4.6A maximum output current
• Output Voltage Range: Both support 24 ~ 280VAC output switching
• Input Control Voltage: Both require 24VDC control input
• Switching Speed: Both exhibit 8.33ms turn-on and turn-off times
• Mechanical Interface: Both feature hold-down screw mounting
• Functional Type: Both are AC output modules with identical operational classification

The 70-OAC24A represents an active product with improved input current efficiency (9 mA versus 13 mA) and maintains functional and electrical compatibility across all critical switching and load parameters.

Parameter Comparison

Engineering Selection Recommendations

The 70-OAC24A is the designated substitute for the obsolete OAC24A. Selection of the 70-OAC24A is supported by:

• Product Status: The 70-OAC24A maintains active product status, ensuring ongoing availability and manufacturing support
• Regulatory Compliance: Both parts share identical REACH and ECCN classifications, maintaining compliance posture across supply chains
• Electrical Equivalence: Input and output electrical parameters are identical, enabling direct functional replacement in existing circuit designs
• Input Current Advantage: The 70-OAC24A operates at reduced input current (9 mA versus 13 mA), providing improved control circuit efficiency

The 70-OAC24A is suitable for new designs, system upgrades, and replacement applications where the OAC24A is no longer procurable.

Frequently Asked Questions (FAQ)

Q: Can the 70-OAC24A directly replace the OAC24A in existing applications?

A: Yes. The 70-OAC24A provides electrical and functional equivalence across all critical parameters: 24VDC input, 4.6A at 24–280VAC output, and identical switching times. Mechanical compatibility is maintained through identical hold-down screw mounting.

Q: What is the difference in input current between these modules?

A: The OAC24A draws 13 mA at the control input, while the 70-OAC24A draws 9 mA. This 4 mA reduction in the 70-OAC24A improves efficiency in control circuits but does not affect output switching performance or load capacity.

Q: Are there packaging differences between the OAC24A and 70-OAC24A?

A: The OAC24A is supplied in standard packaging, while the 70-OAC24A is supplied in bulk packaging. Both maintain identical form factors and mechanical interfaces suitable for standard mounting applications.

Q: Why is the OAC24A classified as obsolete?

A: The OAC24A has reached end-of-life status with Sensata-Crydom. The 70-OAC24A from Grayhill Inc. represents the active equivalent, ensuring continued availability for applications requiring this AC output module specification.

Q: Are regulatory certifications equivalent between these parts?

A: Yes. Both the OAC24A and 70-OAC24A share identical REACH and ECCN classifications (REACH Unaffected, EAR99), maintaining regulatory equivalence for international supply chain applications.