PSR-SCP-24DC/MXF4/4X1/2X2/B Equivalent & Substitute Parts

Part Overview

The PSR-SCP-24DC/MXF4/4X1/2X2/B is a DIN rail-mounted relay manufactured by Phoenix Contact, classified as an obsolete product. This 24VDC coil relay features 4PST-NO (4 Form A) contact configuration with 6A contact rating and integrated diode and lighted indicator features. Due to its obsolete status, identifying functionally compatible substitute components is essential for system maintenance, redesign, and procurement continuity.

Substiute Parts

2903260

Phoenix ContactIn Stock: 9782903260 Datasheet

Current PartRFQ

1104981

Phoenix ContactIn Stock: 8721104981 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PSR-SCP-24DC/MXF4/4X1/2X2/B is constrained by the following critical parameters:

Mandatory Matching Criteria:

• Coil voltage: 24VDC
• Mounting type: DIN Rail
• Manufacturer: Phoenix Contact (series compatibility)
• Termination style: Screw Terminal
• Features: Diode and Lighted Indicator

Functional Compatibility Criteria:

• Contact form configuration (4PST-NO for the main part)
• Contact rating current capacity (6A minimum)
• Switching voltage capability (250VAC/250VDC maximum)
• Operating temperature range overlap

The identified substitute part (1104981) is a Phoenix Contact PSR series component with matching coil voltage, mounting type, and termination style. However, this substitute exhibits reduced contact form configuration (3PST-NO versus 4PST-NO) and lower contact rating current (1.6A versus 6A), indicating application-specific suitability rather than direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The PSR-SCP-24DC/MXF4/4X1/2X2/B is classified as obsolete, necessitating component replacement for new designs or system maintenance. The identified substitute part 1104981 is an active Phoenix Contact PSR series relay with matching coil voltage, mounting configuration, and termination style.

Selection Basis:

The substitute part maintains compatibility in core infrastructure parameters (24VDC coil, DIN rail mounting, screw terminals, diode and lighted indicator features). Both components carry equivalent export classification (EAR99) and comply with RoHS standards, with the substitute meeting the more recent ROHS3 specification.

Critical Differences:

The substitute exhibits reduced contact form configuration (3PST-NO versus 4PST-NO) and significantly lower contact rating current (1.6A versus 6A). These reductions restrict the substitute to applications with lower switching current requirements and fewer independent contact circuits. The substitute also operates at nominal 24VDC switching voltage, compared to the main part's 250VAC/250VDC maximum capability.

Selection of the substitute part is appropriate only when application requirements align with the reduced contact configuration and current rating specifications.

Frequently Asked Questions (FAQ)

Q: Can the 1104981 directly replace the PSR-SCP-24DC/MXF4/4X1/2X2/B in all applications?

A: No. The substitute part has reduced contact form configuration (3PST-NO versus 4PST-NO) and lower contact rating current (1.6A versus 6A). Direct replacement is only suitable for applications requiring three or fewer independent contact circuits and maximum switching currents not exceeding 1.6A.

Q: What are the key compatibility parameters for substitution?

A: Coil voltage (24VDC), mounting type (DIN Rail), termination style (Screw Terminal), and integrated features (Diode, Lighted Indicator) are the primary compatibility parameters. Contact form configuration and current rating must be evaluated against specific application requirements.

Q: Are both parts RoHS compliant?

A: Yes. The main part is RoHS Compliant, and the substitute part is ROHS3 Compliant. Both meet regulatory requirements for hazardous substance restrictions.

Q: What is the operating temperature range difference?

A: The main part operates from -20°C to 45°C, while the substitute operates from -10°C to 55°C. The substitute has a narrower low-temperature range but extends to higher temperatures. Application environment must be evaluated against these ranges.

Q: How do coil power requirements differ?

A: The main part requires 3W coil power with 125mA coil current, while the substitute requires 1.7W with 70mA coil current. The substitute has lower power consumption, which may affect circuit design considerations.

Q: What switching voltage limitations apply to the substitute?

A: The substitute is rated for 24VDC nominal switching voltage, compared to the main part's 250VAC/250VDC maximum capability. Applications requiring higher switching voltages cannot use the substitute.