PSR-SCP-24DC/MXF1/4X1/2X2/B Equivalent & Substitute Parts

Part Overview

The PSR-SCP-24DC/MXF1/4X1/2X2/B is a DIN rail-mounted safety relay module manufactured by Phoenix Contact, designed for industrial control applications requiring 24VDC coil operation and multiple switching contacts. This part is classified as obsolete, necessitating identification of functionally compatible alternatives from the active product portfolio. The module features four Form A contacts with 6A rating, integrated diode protection, and lighted indicator functionality, making it suitable for safety-critical switching applications in industrial automation systems.

Substiute Parts

2902725

Phoenix ContactIn Stock: 11232902725 Datasheet

Current PartRFQ

1104981

Phoenix ContactIn Stock: 8721104981 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PSR-SCP-24DC/MXF1/4X1/2X2/B is constrained by the following critical parameters:

• Coil voltage must remain 24VDC for direct circuit compatibility
• Mounting type must be DIN Rail to maintain mechanical fit within existing enclosures
• Termination style must be Screw Terminal for direct connection compatibility
• Series designation (PSR) indicates Phoenix Contact's safety relay platform
• Features including diode protection and lighted indicator must be present for functional equivalence

The substitute part 1104981 shares the same manufacturer, series, coil voltage, mounting type, termination style, and feature set. However, this part exhibits reduced contact capacity (3 Form A contacts versus 4 Form A) and lower current rating (1.6A versus 6A), indicating it functions as a reduced-capacity alternative within the same product family rather than a direct one-to-one replacement.

Parameter Comparison

Engineering Selection Recommendations

The PSR-SCP-24DC/MXF1/4X1/2X2/B is obsolete and no longer in active production. The substitute part 1104981 is available from active inventory and maintains Phoenix Contact PSR series compatibility with identical coil voltage, mounting configuration, and termination methodology.

Selection of part 1104981 requires circuit-level evaluation due to the following parameter deviations:

• Contact quantity reduced from 4 to 3 Form A contacts
• Contact current rating reduced from 6A to 1.6A
• Switching voltage capability reduced from 250VAC/250VDC to 24VDC nominal operation

Part 1104981 achieves ROHS3 compliance, exceeding the RoHS compliance level of the original part. The substitute operates across an expanded temperature range (-10°C to 55°C versus -20°C to 45°C) and draws reduced coil current (70mA versus 125mA), resulting in lower power consumption.

Direct substitution is applicable only in applications where the reduced contact count and current rating satisfy the circuit requirements. Applications requiring the full 4-contact configuration or 6A switching capacity require alternative sourcing strategies.

Frequently Asked Questions (FAQ)

Q: Can part 1104981 directly replace PSR-SCP-24DC/MXF1/4X1/2X2/B in all applications?

A: No. The substitute part provides only 3 Form A contacts versus the original 4 contacts, and supports only 1.6A per contact versus 6A. Direct replacement is limited to circuits requiring no more than 3 switching contacts and 1.6A maximum current per contact.

Q: Are the mounting and termination connections identical?

A: Yes. Both parts use DIN Rail mounting and Screw Terminal termination, enabling mechanical and electrical connection compatibility at the enclosure level.

Q: What is the impact of the reduced switching voltage rating?

A: The substitute part is rated for 24VDC nominal switching voltage, compared to the original part's 250VAC/250VDC maximum capability. Applications switching higher voltages or AC loads require evaluation against the 24VDC nominal specification.

Q: Does the substitute part maintain the diode and lighted indicator features?

A: Yes. Part 1104981 includes both diode protection and lighted indicator functionality, preserving these operational features.

Q: What compliance certifications apply to the substitute part?

A: Part 1104981 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original part carries RoHS compliance without the ROHS3 designation.

Q: Is the coil voltage identical between both parts?

A: Yes. Both parts operate on 24VDC coil voltage, ensuring compatibility with existing power supply and control circuit designs.