Phoenix Contact 2903689 Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2903689 is a general purpose relay with DPDT (Double Pole Double Throw, 2 Form C) configuration, rated for 10A at 24VDC coil voltage. This socketable relay is designed for standard industrial control applications requiring dual-channel switching capability. The REL-OR series provides reliable electromechanical switching for general automation and control circuits. Substitute parts may be required due to inventory constraints, application-specific requirements, or end-of-life considerations for the primary component.

Substiute Parts

2903689

Phoenix ContactIn Stock: 8482903689 Datasheet

Current PartRFQ

2903693

Phoenix ContactIn Stock: 10052903693 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Phoenix Contact 2903689 are identified based on compatibility within the REL-OR series and alignment with core electrical parameters. The primary substitution criterion is the 24VDC coil voltage and socketable form factor, which ensures mechanical and electrical interchangeability in standard relay socket applications.

The substitute part 2903693 shares the following key parameters with the main part:

• Manufacturer: Phoenix Contact
• Series: REL-OR
• Coil Voltage: 24VDC
• Current Rating: 10A
• Form Factor: Socketable

The 2903693 differs in contact configuration (3PDT / 3 Form C versus DPDT / 2 Form C), which expands switching capability to three independent channels. This configuration difference means the 2903693 provides additional contact poles while maintaining the same coil and current specifications, making it suitable for applications requiring three-channel switching within the same electrical and mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

Selection between the 2903689 and 2903693 depends on the specific switching requirements of the application circuit. The 2903689 DPDT configuration provides two independent switching channels, each capable of switching 10A at the specified coil voltage. The 2903693 3PDT configuration provides three independent switching channels with identical electrical ratings.

Both parts are manufactured by Phoenix Contact within the REL-OR series and share identical coil voltage (24VDC), current rating (10A), and socketable form factor. This ensures mechanical compatibility in standard relay socket installations and electrical compatibility with 24VDC control circuits.

Selection should be based on the number of switching channels required by the application. If the circuit design requires only two switching channels, the 2903689 is the appropriate choice. If three switching channels are required, the 2903693 is the suitable substitute. Both parts maintain the same physical socket interface and electrical operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the 2903693 be used as a direct replacement for the 2903689?

A: Both parts share identical coil voltage (24VDC), current rating (10A), and socketable form factor within the REL-OR series. The 2903693 provides an additional contact pole (3PDT versus DPDT). Direct substitution is possible only if the application circuit can accommodate the additional switching channel or if the extra contacts remain unused.

Q: What is the difference between DPDT and 3PDT configurations?

A: DPDT (2 Form C) provides two independent switching channels, each with a common terminal and two switched positions. 3PDT (3 Form C) provides three independent switching channels with the same switching capability per channel. The 3PDT configuration offers expanded switching capability within the same electrical and mechanical specifications.

Q: Are both parts compatible with the same relay socket?

A: Yes. Both the 2903689 and 2903693 are socketable relays within the Phoenix Contact REL-OR series with identical form factors. They are designed for installation in standard relay sockets compatible with this series.

Q: What coil voltage do these relays require?

A: Both the 2903689 and 2903693 operate with a 24VDC coil voltage. This voltage must be supplied to the relay coil terminals to energize the switching mechanism.

Q: What is the maximum current rating for these relays?

A: Both relays are rated for 10A per contact. This is the maximum continuous current that each switching channel can handle under the specified operating conditions.