Phoenix Contact 2944261 SSR Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2944261 is a solid-state relay (SSR) module configured as SPST-NO (Single Pole Single Throw - Normally Open) with a 1A load current capacity. This module operates with a 120VAC input and supports DC load voltages from 5V to 36V. The device is mounted on DIN rail and features screw terminal connections.

The 2944261 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for replacement, repair, and new installations where this module is specified.

Substiute Parts

2944261

Phoenix ContactIn Stock: 7502944261 Datasheet

Current PartRFQ

2900367

Phoenix ContactIn Stock: 7842900367 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2944261 is determined by the following critical parameters:

• Circuit Configuration: Must remain SPST-NO (1 Form A) to maintain identical switching functionality
• Output Type: Must be DC to ensure compatibility with the load circuit
• Mounting Type: Must be DIN Rail to fit existing mechanical installations
• Package Type: Must be Module format for form factor compatibility
• Load Current Capacity: Must meet or exceed the 1A requirement
• Load Voltage Range: Must encompass or exceed the 5V to 36V operating window
• Input Voltage: Must accept 120VAC or 120VAC/DC input
• RoHS Compliance: Must maintain RoHS Compliant status for regulatory consistency

The Phoenix Contact 2900367 qualifies as a substitute based on these parameters. While it operates at a higher load current (3A) and different load voltage range (3V ~ 33V), it maintains the same circuit configuration, output type, mounting method, and package format. The higher current rating provides operational margin, and the overlapping voltage range (3V ~ 33V intersects with 5V ~ 36V from 5V to 33V) supports the primary operating window of the original part.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900367 is the identified substitute for the obsolete 2944261. Selection of this substitute is supported by the following factors:

• Product Status: The 2900367 is Active, ensuring ongoing availability and supply chain continuity compared to the Obsolete status of the 2944261
• Regulatory Compliance: Both parts maintain RoHS Compliant status, satisfying environmental and regulatory requirements
• Functional Equivalence: Both parts provide SPST-NO switching with DC output on DIN Rail modules
• Operational Margin: The 2900367 provides higher load current capacity (3A versus 1A), offering design margin for the application
• Input Voltage Flexibility: The 2900367 accepts both 120VAC and 120VAC/DC input, providing broader input compatibility

The primary difference is the termination style change from screw terminal to spring terminal. This requires mechanical installation adjustment but does not affect electrical performance or switching characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 2900367 directly replace the 2944261 in existing installations?

A: The 2900367 provides electrical and functional equivalence as a SPST-NO DC output relay module on DIN Rail. The termination style differs (spring terminal versus screw terminal), requiring mechanical reconnection of wiring. No electrical modifications are necessary.

Q: What is the voltage overlap between these two parts?

A: The 2944261 operates at 5V ~ 36V load voltage, while the 2900367 operates at 3V ~ 33V. The overlapping operating range is 5V to 33V. Applications requiring load voltages above 33V cannot use the 2900367 as a substitute.

Q: Does the higher current rating of the 2900367 affect compatibility?

A: No. The 2900367 is rated for 3A load current compared to the 1A rating of the 2944261. A higher-rated component can safely carry lower currents. This provides operational margin and does not create compatibility issues.

Q: Are there input voltage differences between these parts?

A: The 2944261 accepts 120VAC input only. The 2900367 accepts both 120VAC and 120VAC/DC input. This makes the 2900367 more flexible for applications with either AC or DC input sources.

Q: What is the significance of the different series designations?

A: The 2944261 belongs to the EMG10-OV series, while the 2900367 belongs to the PLC-OPT series. These are different product lines within Phoenix Contact's relay portfolio. Both series provide equivalent SPST-NO module functionality on DIN Rail.

Q: How does the spring terminal differ from the screw terminal?

A: Screw terminals require manual tightening of a screw to secure wire connections. Spring terminals use a spring-loaded mechanism for wire insertion and removal. Spring terminals typically offer faster installation and removal but require compatible wire gauges and insertion tools.