Phoenix Contact PSR 2901416 Safety Relay – Equivalent & Substitute Parts

Part Overview

The Phoenix Contact PSR 2901416 is a DIN rail-mounted safety relay with 4PST contact configuration (3 Form A, 1 Form B) rated for 6 A at 250VAC/250VDC maximum switching voltage. Designed for 48VAC/DC coil operation, this relay features a lighted indicator and screw terminal connections. The PSR 2901416 is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, retrofit applications, and continued component availability.

Substiute Parts

2901416

Phoenix ContactIn Stock: 11762901416 Datasheet

Current PartRFQ

2700524

Phoenix ContactIn Stock: 9522700524 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PSR 2901416 is constrained by the following critical parameters:

• Coil Voltage: The main part operates at 48VAC/DC. Substitute parts must match this voltage specification or require external voltage conversion.
• Contact Configuration: The 4PST arrangement (3 Form A, 1 Form B) defines the switching logic. Substitutes with different contact forms are not directly interchangeable without circuit redesign.
• Current Rating: The 6 A contact rating establishes load capacity. Substitutes must maintain or exceed this rating.
• Switching Voltage: Maximum 250VAC/250VDC defines the voltage isolation capability.
• Mounting and Termination: DIN rail mounting with screw terminals ensures mechanical and electrical compatibility within the installation footprint.
• Series Compatibility: Phoenix Contact PSR series relays maintain consistent mechanical and electrical interfaces.

The identified substitute, PSR 2700524, operates at 24VAC/DC coil voltage with a 3PST contact configuration (3 Form A only). This represents a functional alternative only in applications where the reduced contact configuration and different coil voltage are acceptable through system redesign or external voltage supply modification.

Parameter Comparison

Engineering Selection Recommendations

PSR 2901416 Obsolescence Context: The PSR 2901416 is classified as obsolete. For new designs or system replacements, the PSR 2700524 is the active production alternative within the Phoenix Contact PSR safety relay portfolio.

Substitution Feasibility: Direct substitution of PSR 2700524 for PSR 2901416 is not possible without system modifications:

• The coil voltage differs (24VAC/DC vs. 48VAC/DC), requiring external power supply adjustment or voltage conversion circuitry.
• The contact configuration is reduced (3PST-NO vs. 4PST-3NO/1NC), eliminating one normally-closed contact. Applications dependent on the Form B contact require alternative logic implementation.

Compliance Status: Both relays meet RoHS requirements. The PSR 2700524 carries ROHS3 compliance and is REACH-affected, indicating current regulatory alignment for EU market applications.

Inventory and Availability: The PSR 2700524 is actively stocked (875 Pcs) compared to the obsolete PSR 2901416 (1134 Pcs remaining). For long-term system support, the active part number ensures continued availability.

Frequently Asked Questions (FAQ)

Q: Can PSR 2700524 replace PSR 2901416 without modifications?

A: No. The PSR 2700524 has a different coil voltage (24VAC/DC) and reduced contact configuration (3PST-NO). Both the power supply and control logic must be redesigned to accommodate these differences.

Q: What is the primary difference between these two relays?

A: The PSR 2901416 provides four poles (3 Form A + 1 Form B) at 48VAC/DC coil voltage. The PSR 2700524 provides three poles (3 Form A only) at 24VAC/DC coil voltage. The contact current rating (6 A) and switching voltage (250VAC/250VDC) are identical.

Q: Why is PSR 2901416 listed as obsolete?

A: Phoenix Contact has discontinued the PSR 2901416 in favor of updated models within the PSR series. The PSR 2700524 represents the active production alternative for safety relay applications requiring DIN rail mounting and screw terminal connections.

Q: Are the mechanical dimensions compatible between these relays?

A: Both relays use DIN rail mounting and screw terminal connections, ensuring mechanical compatibility within the installation footprint. However, electrical circuit integration differs due to contact configuration and coil voltage variations.

Q: What compliance certifications apply to both relays?

A: Both relays are RoHS compliant. The PSR 2700524 carries ROHS3 certification and is REACH-affected, meeting current EU regulatory requirements. The PSR 2901416 is RoHS compliant under the original directive.

Q: Can I use a voltage converter to adapt PSR 2700524 to 48VAC/DC operation?

A: External voltage conversion is technically possible but introduces additional circuit complexity and potential reliability concerns. System redesign to operate at 24VAC/DC is the preferred engineering approach for substitution.