M-OAC24 AC Output Module Equivalent & Substitute Parts

Part Overview

The M-OAC24 is an AC output module manufactured by Sensata-Crydom, designed to switch AC loads with a 24VDC control input. This module provides 4.6A output capacity across a 12–140VAC range and features 8.33ms switching response times. The M-OAC24 is classified as obsolete, making identification of compatible substitute components essential for system maintenance, redesign, and procurement planning.

Substiute Parts

M-OAC24

Sensata-CrydomIn Stock: 722M-OAC24 Datasheet

Current PartRFQ

70M-OAC24

Grayhill Inc.In Stock: 82170M-OAC24 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M-OAC24 is determined by the following critical electrical and mechanical parameters:

• Input voltage specification (24VDC control signal)
• Output voltage range capability (minimum 12VAC to maximum 140VAC)
• Output current rating (4.6A nominal)
• Switching response times (8.33ms turn-on and turn-off)
• Physical form factor (Mini style, AC output module type)
• Packaging configuration

The 70M-OAC24 manufactured by Grayhill Inc. qualifies as a direct substitute based on matching input voltage, output voltage range overlap, comparable output current capacity, and identical switching response characteristics. Differences in minimum output voltage (24VAC vs. 12VAC) and input current draw represent acceptable trade-offs for applications within the overlapping voltage range.

Parameter Comparison

Engineering Selection Recommendations

The 70M-OAC24 serves as the primary substitute for the obsolete M-OAC24. Selection between these components depends on system-level requirements:

Use M-OAC24 (if available): Applications requiring RoHS compliance and output voltage operation below 24VAC. The 4.6A output current rating provides additional margin for load switching.

Use 70M-OAC24: New designs, system upgrades, and applications where RoHS compliance is not mandated. This part is currently in active production status, ensuring long-term availability. The 3A output current rating is suitable for most AC switching applications within the 24–140VAC range. Lower input current draw (9 mA vs. 13 mA) reduces control circuit power requirements.

Compliance Consideration: The 70M-OAC24 is RoHS non-compliant. Applications subject to RoHS regulations must confirm exemption applicability or source alternative compliant components.

Frequently Asked Questions (FAQ)

Q: Can the 70M-OAC24 replace the M-OAC24 in all applications?

A: The 70M-OAC24 is compatible with applications operating AC loads in the 24–140VAC range. Applications requiring output voltage operation below 24VAC require the original M-OAC24 or alternative components with extended low-voltage capability.

Q: What is the impact of the 0.5A output current difference?

A: The M-OAC24 provides 4.6A output capacity while the 70M-OAC24 provides 3A. For loads requiring current above 3A, the M-OAC24 is required. For loads at or below 3A, the 70M-OAC24 operates within specification.

Q: Does the packaging difference affect compatibility?

A: The M-OAC24 ships in Tray packaging while the 70M-OAC24 ships in Bulk packaging. Packaging does not affect electrical or mechanical compatibility; it impacts only procurement and handling procedures.

Q: Why is the 70M-OAC24 RoHS non-compliant?

A: RoHS compliance status is determined by material composition and manufacturing processes. The 70M-OAC24 does not meet RoHS restrictions on hazardous substances. Verify regulatory requirements for your application before selection.

Q: Are the switching response times identical?

A: Yes. Both the M-OAC24 and 70M-OAC24 feature 8.33ms turn-on and turn-off times, ensuring equivalent dynamic performance in AC switching applications.