Equivalent & Substitute Parts: A4850-10 Solid State Relay

Part Overview

The Sensata-Crydom A4850-10 is an active, ROHS3-compliant solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 50A load current and AC output operation. This hockey puck-style relay is designed for chassis mount applications with screw terminal connections. The part is maintained in active production status with 1051 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when supply chain requirements necessitate qualified alternatives.

Substiute Parts

A4850-10

Sensata-CrydomIn Stock: 1079A4850-10 Datasheet

Current PartRFQ

84137321N

CrouzetIn Stock: 91084137321N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A4850-10 is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A)
• Output Type: Must be AC
• Load Current Rating: Must be 50 A minimum
• Package Style: Must be Hockey Puck with Chassis Mount capability
• Termination Style: Must be Screw Terminal
• Input Voltage Compatibility: Operating range must overlap with or exceed 90 ~ 280 VAC
• Load Voltage Range: Must accommodate the application's voltage requirements within the specified operating window

The Crouzet 84137321N meets these substitution criteria through equivalent circuit topology, identical load current rating, compatible input voltage range (90 ~ 260 VAC), and extended load voltage range (48 V ~ 660 V). Both parts share identical package geometry, mounting configuration, and termination methodology.

Parameter Comparison

Engineering Selection Recommendations

Both the A4850-10 and 84137321N are active production components with current inventory availability. The A4850-10 maintains ROHS3 compliance status, while the 84137321N carries RoHS compliance certification. Selection between these parts is determined by application voltage requirements and regulatory compliance mandates. The A4850-10 provides a maximum load voltage of 530V, while the 84137321N extends to 660V. The A4850-10 supports input voltages to 280VAC, whereas the 84137321N operates to 260VAC. Both parts are classified under ECCN EAR99 and HTSUS 8536.49.0080, indicating equivalent regulatory treatment for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 84137321N directly replace the Sensata-Crydom A4850-10?

A: Yes, provided the application voltage requirements fall within the overlapping operating ranges. Both parts share identical circuit configuration (SPST-NO), load current rating (50A), package geometry (Hockey Puck), mounting type (Chassis Mount), and termination style (Screw Terminal). Verify that your load voltage requirement does not exceed 530V if using the A4850-10, or confirm compatibility with the 48V minimum of the 84137321N.

Q: What are the input voltage compatibility considerations?

A: The A4850-10 accepts input voltages from 90 ~ 280VAC, while the 84137321N operates from 90 ~ 260VAC. If your control circuit requires input voltages between 260VAC and 280VAC, the A4850-10 is the appropriate selection. Both parts function across the 90 ~ 260VAC overlap range.

Q: Are there differences in load voltage handling between these parts?

A: Yes. The A4850-10 is rated for load voltages from 80V to 530V, while the 84137321N operates from 48V to 660V. Applications requiring load voltages below 80V or above 530V must use the 84137321N. Applications within the 80V to 530V window are compatible with both parts.

Q: Do these parts have identical physical dimensions and mounting requirements?

A: Both parts are hockey puck-style relays with chassis mount configuration and screw terminal connections. Physical compatibility is confirmed for direct mechanical substitution in existing mounting arrangements.

Q: What compliance differences exist between these parts?

A: The A4850-10 is ROHS3 compliant, while the 84137321N is RoHS compliant. Both are REACH-regulated components and carry identical ECCN and HTSUS classifications. Regulatory requirements specific to your application or region determine which compliance status is required.