Phoenix Contact 2901425 Safety Relay - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2901425 is a safety relay module from the PSR series, designed for DIN rail mounting applications. This relay features a 4PST contact configuration (3 Form A, 1 Form B) with 6A contact rating and operates on 120VAC/DC coil voltage. The product is classified as obsolete, making identification of suitable substitute components essential for system maintenance and new installations where equivalent functionality is required.

Substiute Parts

2901425

Phoenix ContactIn Stock: 7852901425 Datasheet

Current PartRFQ

2700525

Phoenix ContactIn Stock: 9732700525 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2901425 is based on the following critical parameters:

• Mounting compatibility: DIN rail mounting required
• Contact rating: 6A minimum current capacity
• Switching voltage: 250VAC/250VDC maximum capability
• Relay type: Safety relay classification
• Series compatibility: PSR series preferred for form factor and footprint alignment
• Coil voltage range: Must accommodate or exceed 120VAC/DC operational requirement
• Contact configuration: Minimum 3 Form A contacts required for primary switching functions

The Phoenix Contact 2700525 qualifies as a substitute based on these parameters. While the 2700525 features a different contact form (3PST-NO versus 4PST-3NO/1NC) and coil voltage range (24~230VAC/DC versus fixed 120VAC/DC), it maintains the required 6A contact rating, 250VAC/250VDC switching voltage, DIN rail mounting, and PSR series designation. The 2700525 provides three Form A contacts, which covers the primary switching requirement of the original part.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2700525 is an active product with current manufacturing status and ROHS3 compliance, making it suitable for new designs and system replacements where the 2901425 is no longer available. Both components maintain equivalent contact ratings and switching voltage specifications required for 6A switching applications at 250VAC/250VDC.

Key considerations for selection:

• The 2700525 operates across a wider coil voltage range (24~230VAC/DC), providing flexibility for systems with variable supply voltages compared to the fixed 120VAC/DC requirement of the 2901425.
• The 2700525 provides three Form A contacts, eliminating the Form B contact present in the original part. Applications requiring Form B (normally closed) contact functionality must be redesigned or supplemented with additional relay modules.
• Termination method differs: the 2700525 uses screwless clamp terminals versus spring terminals on the 2901425, requiring wiring harness adaptation.
• Operating temperature range of the 2700525 extends to -40°C, providing enhanced low-temperature performance compared to the -25°C minimum of the 2901425.
• Response time characteristics differ: the 2700525 has longer operate time (150ms versus 40ms) and shorter release time (20ms versus 60ms).

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2700525 directly replace the 2901425 in existing installations?

A: Direct replacement requires verification of contact configuration requirements. The 2700525 provides three Form A contacts versus the four contacts (3 Form A, 1 Form B) of the 2901425. If the Form B contact is actively used in the circuit, alternative solutions must be implemented.

Q: What are the coil voltage implications of substitution?

A: The 2901425 operates on fixed 120VAC/DC, while the 2700525 accepts 24~230VAC/DC. In systems with 120VAC/DC supply, the 2700525 operates within its specified range. Systems with different supply voltages may benefit from the 2700525's wider voltage acceptance.

Q: Are there differences in response time between these relays?

A: Yes. The 2901425 operates in 40ms and releases in 60ms. The 2700525 operates in 150ms and releases in 20ms. Applications with strict timing requirements must account for these differences in system design.

Q: How do termination differences affect installation?

A: The 2901425 uses spring terminals while the 2700525 uses screwless clamp terminals. Existing wiring harnesses designed for spring terminals require modification or replacement to accommodate the screwless clamp interface.

Q: Are both relays RoHS compliant?

A: Yes. The 2901425 is RoHS Compliant, and the 2700525 is ROHS3 Compliant. Both meet current environmental compliance requirements.

Q: What is the temperature operating range difference?

A: The 2901425 operates from -25°C to 55°C, while the 2700525 operates from -40°C to 55°C. The 2700525 provides extended low-temperature capability for applications in cold environments.