Phoenix Contact 2903700 General Purpose Relay DPDT 120VAC

Part Overview

The Phoenix Contact 2903700 is a general purpose relay with DPDT (Double Pole Double Throw, 2 Form C) configuration, rated for 16A at 120VAC coil voltage. This socketable relay is designed for standard industrial control applications requiring dual-pole switching functionality. The part is currently in stock with 1,099 units available as new original inventory.

Equivalent and substitute parts may be required due to application-specific requirements, such as needing additional poles for expanded switching capability, or to address supply chain considerations while maintaining functional compatibility within the REL-PR series family.

Substiute Parts

2903700

Phoenix ContactIn Stock: 11372903700 Datasheet

Current PartRFQ

2903704

Phoenix ContactIn Stock: 7962903704 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the Phoenix Contact REL-PR relay family is determined by the following critical parameters:

• Coil Voltage: Must match at 120VAC
• Current Rating: Must match at 16A
• Form Factor: Must be socketable for mechanical compatibility
• Manufacturer: Phoenix Contact

The substitute part 2903704 maintains identical electrical specifications (120VAC coil, 16A current rating) and form factor (socketable). The primary difference is the contact configuration: the 2903704 provides 3PDT (3 Form C) instead of DPDT (2 Form C), offering additional switching poles for applications requiring expanded control capability. Both parts belong to the Phoenix Contact general purpose relay product line and share the same mounting and operational characteristics.

Parameter Comparison

Engineering Selection Recommendations

2903700 (DPDT Configuration): Select this part for applications requiring dual-pole switching with 16A capacity at 120VAC. The DPDT configuration is suitable for standard two-circuit control applications.

2903704 (3PDT Configuration): Select this part when application requirements demand three independent switching circuits with identical 16A and 120VAC specifications. The additional pole provides expanded control flexibility while maintaining the same coil voltage and current rating.

Both parts are Phoenix Contact original components with current inventory availability. Selection between these parts depends solely on the number of switching poles required by the application circuit design.

Frequently Asked Questions (FAQ)

Q: Can the 2903704 (3PDT) directly replace the 2903700 (DPDT) in existing applications?

A: The 2903704 can physically replace the 2903700 due to identical socketable form factor, coil voltage (120VAC), and current rating (16A). However, the application circuit must accommodate the additional third pole. If the circuit design uses only two poles, the third pole will remain unused but will not affect operation of the active circuits.

Q: Are the coil voltage and current ratings identical between these parts?

A: Yes. Both the 2903700 and 2903704 operate at 120VAC coil voltage and are rated for 16A switching current. These specifications are identical.

Q: What is the primary difference between these substitute parts?

A: The primary difference is the contact configuration. The 2903700 provides DPDT (2 Form C) switching, while the 2903704 provides 3PDT (3 Form C) switching. This means the 2903704 offers one additional independent switching pole.

Q: Are both parts socketable?

A: Yes. Both the 2903700 and 2903704 are socketable relays, ensuring mechanical compatibility with standard Phoenix Contact relay sockets.

Q: Which part should be selected for new designs?

A: Selection depends on the number of switching poles required by the application. For two-pole switching applications, the 2903700 is appropriate. For three-pole switching applications, the 2903704 is required.