CWU2490P Equivalent & Substitute Parts

Part Overview

The CWU2490P is a solid-state relay (SSR) manufactured by Sensata Technologies, configured as a single-pole single-throw normally open (SPST-NO) device in a hockey puck form factor. This active product is designed for chassis mount applications requiring high-current AC switching at industrial voltage levels. The device operates with zero-cross detection to minimize electromagnetic interference and switching transients.

Substitute parts are identified when they maintain functional equivalence across critical electrical parameters: load current capacity, input voltage range, output voltage range, circuit configuration, and termination style. Alternative sources become necessary due to inventory availability, supply chain considerations, or specific application requirements.

Substiute Parts

CWU2490P

Sensata TechnologiesIn Stock: 789CWU2490P Datasheet

Current PartRFQ

84138153N

CrouzetIn Stock: 92784138153N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWU2490P is determined by the following mandatory parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Load Current Rating: Must be rated for 90 A minimum to support the same load capacity
• Input Voltage Range: Must accommodate the control signal voltage (20–280 VAC or 20–48 VDC)
• Output Voltage Range: Must support the load voltage window (24–280 V minimum)
• Output Type: Must include AC switching with zero-cross detection
• Mounting Type: Must be chassis mount to fit the same mechanical installation
• Package / Case: Must be hockey puck form factor for dimensional compatibility
• Termination Style: Must use screw terminals for electrical connection compatibility

The substitute part 84138153N (Crouzet GN+ series) meets all mandatory substitution criteria. While it offers an extended output voltage range (24–500 V) and operates across a slightly different input voltage specification (20–260 VAC/DC), these differences represent functional enhancements that do not compromise compatibility with applications designed for the CWU2490P.

Parameter Comparison

Engineering Selection Recommendations

Both the CWU2490P and 84138153N are active products with RoHS compliance, ensuring regulatory alignment for industrial applications. The CWU2490P remains the primary specification for new designs when Sensata supply is available. The 84138153N serves as a qualified substitute when supply constraints or application-specific requirements necessitate an alternative source.

The Crouzet 84138153N offers an extended output voltage range (24–500 V versus 24–280 V), which provides additional operational flexibility in applications requiring higher load voltages while maintaining full compatibility with standard 24–280 V installations. The input voltage specification difference (20–260 VAC/DC versus 20–280 VAC, 20–48 VDC) does not create incompatibility for typical industrial control circuits operating within the 20–260 V window.

Both devices employ identical circuit topology, current rating, zero-cross switching, and mechanical form factor, ensuring direct functional substitution without circuit redesign or mechanical rework.

Frequently Asked Questions (FAQ)

Q: Can the 84138153N replace the CWU2490P in existing installations?

A: Yes. Both devices share identical circuit configuration (SPST-NO), load current rating (90 A), output type (AC with zero-cross), mounting type (chassis mount), package form factor (hockey puck), and termination style (screw terminal). The 84138153N is electrically and mechanically compatible with applications designed for the CWU2490P.

Q: What is the difference in input voltage specification between these parts?

A: The CWU2490P accepts 20–280 VAC or 20–48 VDC. The 84138153N accepts 20–260 VAC/DC. For control circuits operating within the 20–260 V range, both devices are functionally equivalent. Applications requiring input voltages between 260–280 VAC should use the CWU2490P.

Q: Why does the 84138153N have a higher output voltage range?

A: The 84138153N is rated for 24–500 V output, compared to the CWU2490P's 24–280 V. This extended range does not affect compatibility with standard industrial loads operating at 24–280 V. The higher rating provides additional design margin for applications with elevated load voltage requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the CWU2490P and 84138153N are RoHS compliant, meeting environmental and regulatory requirements for industrial electronics.

Q: What is the significance of zero-cross switching in these devices?

A: Zero-cross switching synchronizes relay activation with the AC voltage waveform zero-crossing point, reducing electromagnetic interference, switching transients, and stress on connected loads. Both devices incorporate this feature.

Q: Can these parts be used interchangeably in new designs?

A: Yes, with consideration for input voltage requirements. For designs operating within the 20–260 V input range, either part is suitable. For designs requiring input voltages above 260 VAC, the CWU2490P is the specified choice.