CWA48125P Solid State Relay - Equivalent & Substitute Parts

Part Overview

The CWA48125P is a Solid State Relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device with a 125A load capacity. This hockey puck-style relay operates across a load voltage range of 48V to 660V AC with zero-cross switching capability. The part is currently in active production status with 723 units available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges.

Substiute Parts

CWA48125P

Sensata-CrydomIn Stock: 802CWA48125P Datasheet

Current PartRFQ

84137181N

CrouzetIn Stock: 97984137181N Datasheet

MFR RecommendedRFQ

84137181N

CrouzetIn Stock: 97984137181N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWA48125P is determined by strict equivalence across the following critical parameters:

Load Performance Parameters:

• Circuit configuration must be SPST-NO (1 Form A)
• Load current rating must be 125A
• Load voltage range must encompass 48V to 660V
• Output type must be AC with zero-cross switching

Mechanical & Interface Parameters:

• Package type must be Hockey Puck
• Mounting type must be Chassis Mount
• Termination style must be Screw Terminal

Compliance Parameters:

• RoHS Compliant status required
• Active product status required

The substitute part 84137181N (Crouzet, Series GN) meets all critical load performance, mechanical, and compliance requirements. The input voltage range differs (20 ~ 265VAC versus 90 ~ 280VAC), but this represents a broader input specification that encompasses the original part's operating window, making it functionally compatible in applications designed for the CWA48125P.

Parameter Comparison

Engineering Selection Recommendations

Both the CWA48125P and 84137181N are active production components with RoHS compliance certification. Selection between these parts should be based on:

Availability: The CWA48125P has 723 units in stock; the 84137181N has 928 units available.

Supply Chain Considerations: Both manufacturers maintain active product status, ensuring continued availability and technical support.

Input Voltage Specification: The 84137181N accepts a broader input voltage range (20 ~ 265VAC) compared to the CWA48125P (90 ~ 280VAC). In applications where input voltage remains within the CWA48125P specification window, both parts are functionally interchangeable. Applications requiring operation below 90VAC input would require the 84137181N.

Regulatory Compliance: Both parts meet RoHS requirements and carry equivalent ECCN and HTSUS classifications (EAR99 and 8536.49.0080 respectively).

Frequently Asked Questions (FAQ)

Q: Can the 84137181N replace the CWA48125P in existing designs?

A: Yes, provided the application input voltage remains within the CWA48125P specification range (90 ~ 280VAC). The 84137181N's broader input range (20 ~ 265VAC) makes it compatible with all CWA48125P applications. All other electrical and mechanical parameters are equivalent.

Q: Are there differences in packaging between these parts?

A: Both parts use identical Hockey Puck packaging with Chassis Mount configuration and Screw Terminal termination. Physical installation and PCB layout compatibility are maintained.

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

A: The CWA48125P specifies 90 ~ 280VAC input, while the 84137181N specifies 20 ~ 265VAC input. The 84137181N's lower minimum (20VAC) provides broader application flexibility. The CWA48125P's higher maximum (280VAC) is not exceeded by the 84137181N's 265VAC specification, making the 84137181N suitable for all CWA48125P applications within the original input voltage window.

Q: Are both parts RoHS compliant?

A: Yes, both the CWA48125P and 84137181N carry RoHS Compliant certification and are suitable for applications requiring RoHS compliance.

Q: What load parameters must remain constant when substituting?

A: Load voltage (48V ~ 660V), load current (125A), circuit configuration (SPST-NO), and output type (AC, Zero Cross) must remain equivalent. These parameters define the relay's functional capability and cannot be altered during substitution.