PSR-SPP-24DC/MXF2/4X1/2X2/B Equivalent & Substitute Parts

Part Overview

The PSR-SPP-24DC/MXF2/4X1/2X2/B is a 24VDC relay manufactured by Phoenix Contact, configured as a 4PST-NO (4 Form A) switching device with 6A contact rating. This component is classified as obsolete, indicating that direct replacement from the original manufacturer may no longer be available through standard distribution channels. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for maintenance, repair, and new installations where this relay specification is required.

Substiute Parts

2903255

Phoenix ContactIn Stock: 11752903255 Datasheet

Current PartRFQ

1104972

Phoenix ContactIn Stock: 7541104972 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PSR-SPP-24DC/MXF2/4X1/2X2/B is constrained by the following critical parameters:

Mandatory Matching Criteria:

• Coil voltage: 24VDC
• Mounting type: DIN Rail
• Termination style: Spring Terminal
• Manufacturer: Phoenix Contact (series compatibility)

Functional Constraints: The original part specifies 4PST-NO contact configuration with 6A contact rating and 250VAC/250VDC maximum switching voltage. Substitute parts must maintain compatibility with these electrical specifications to ensure proper circuit operation.

Compliance Requirements: RoHS compliance status and MSL rating are critical for supply chain and environmental regulatory adherence.

The identified substitute part 1104972 is a Phoenix Contact PSR series component that shares the same coil voltage, mounting type, and termination style. However, this substitute operates under different contact configuration and current rating parameters, requiring engineering evaluation for specific application compatibility.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The original PSR-SPP-24DC/MXF2/4X1/2X2/B is obsolete, making part 1104972 the manufacturer-recommended alternative from Phoenix Contact's active product line. The substitute maintains active product status, ensuring ongoing availability and support.

Compliance Alignment: Both parts meet RoHS requirements. Part 1104972 carries ROHS3 compliance, representing current regulatory standards. Both components maintain MSL Level 1 rating, indicating no moisture sensitivity constraints during storage and handling.

Functional Differences: The substitute part operates with reduced contact current capacity (1.6A versus 6A) and lower switching voltage specification (24VDC nominal versus 250VAC/250VDC maximum). These differences require verification against specific circuit load requirements before implementation.

Electrical Characteristics: The substitute exhibits lower coil current (70mA versus 125mA) and reduced coil power consumption (1.7W versus 3W), resulting in improved energy efficiency. The higher coil resistance (342.9 Ohms versus 192 Ohms) reflects this design optimization.

Frequently Asked Questions (FAQ)

Q: Can part 1104972 directly replace the PSR-SPP-24DC/MXF2/4X1/2X2/B in all applications?

A: Direct replacement requires verification of contact current and switching voltage requirements. The substitute provides 1.6A contact rating and 24VDC nominal switching voltage, compared to the original 6A and 250VAC/250VDC specifications. Applications requiring higher current capacity or voltage switching must be re-evaluated.

Q: What are the key compatibility factors for this substitution?

A: Coil voltage (24VDC), mounting type (DIN Rail), and termination style (Spring Terminal) are compatible. Contact configuration differs (3PST-NO versus 4PST-NO), and current/voltage ratings are reduced in the substitute part.

Q: Why is the original part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and standard distribution. Part 1104972 represents the active product line equivalent within Phoenix Contact's PSR relay series.

Q: Are there packaging differences between these parts?

A: The original part specifies standard packaging, while part 1104972 is supplied in box packaging. This does not affect functional compatibility but may impact inventory and handling procedures.

Q: How do the operating temperature ranges compare?

A: The original part operates from -20°C to 45°C, while the substitute operates from -10°C to 55°C. The substitute provides a wider upper temperature range but narrower lower temperature range. Application environment must be verified against these specifications.

Q: What is the impact of reduced coil power consumption?

A: The substitute's lower coil power (1.7W versus 3W) reduces heat generation and power supply load. This is beneficial for energy efficiency but does not affect switching performance or contact reliability in equivalent applications.