Phoenix Contact 2821232 General Purpose Relay SPDT 6A 48V - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2821232 is a general purpose relay with Single Pole Double Throw (SPDT) contact configuration, rated for 6A at 48VAC/DC coil voltage. This socketable relay features a lighted indicator and varistor protection, designed for non-latching switching applications. The part is currently obsolete, making identification of suitable substitute components essential for system maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

2821232

Phoenix ContactIn Stock: 9632821232 Datasheet

Current PartRFQ

2900301

Phoenix ContactIn Stock: 8632900301 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2821232 is determined by the following critical parameters that must remain equivalent:

Mandatory Matching Parameters:

• Contact Form: SPDT (1 Form C) configuration
• Contact Rating: 6 A minimum
• Coil Voltage: 48V (AC or DC acceptable)
• Switching Voltage: 250VAC/250VDC minimum capability
• Coil Type: Non Latching operation
• Relay Type: General Purpose

Acceptable Variation Parameters:

• Mounting Type: Socketable or DIN Rail (functional equivalence with appropriate installation method)
• Termination Style: Plug In or Spring Terminal (both provide electrical connection)
• Coil Current: Minor variations acceptable (8.5 mA reference)
• Operating Temperature: Extended range acceptable if minimum -20°C and maximum 50°C are met
• Contact Material: Silver Nickel or Silver Tin Oxide both acceptable for general purpose switching

The Phoenix Contact 2900301 meets all mandatory matching parameters while offering active product status and extended operational characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900301 is a functionally equivalent substitute for the obsolete 2821232 based on the following engineering criteria:

Electrical Equivalence: Both relays maintain identical SPDT contact configuration, 6A current rating, and 250VAC/250VDC switching capability. The 2900301 operates on 48VDC (a subset of the original 48VAC/DC specification), making it suitable for DC-powered applications. For AC-only applications, the coil voltage specification difference requires verification of system power supply.

Performance Characteristics: The 2900301 demonstrates improved switching performance with 5ms operate time and 8ms release time compared to the original 10ms specification. This faster response is compatible with general purpose relay applications and does not introduce incompatibility.

Compliance Status: The 2900301 carries ROHS3 compliance, exceeding the RoHS compliance of the original part. Both parts maintain EAR99 ECCN classification and identical HTSUS codes, confirming regulatory equivalence.

Practical Considerations: The primary difference lies in mounting and termination methods. The 2821232 uses socketable mounting with plug-in termination, while the 2900301 employs DIN Rail mounting with spring terminals. System integration requires verification that the installation environment accommodates DIN Rail mounting and spring terminal connections. The 2900301 includes a socket, facilitating retrofit applications.

Availability: The 2900301 maintains active product status with current manufacturing support, ensuring long-term availability and supply chain reliability compared to the obsolete 2821232.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2900301 directly replace the 2821232 in existing installations?

A: Electrical substitution is valid for DC-powered systems. Physical installation requires DIN Rail mounting capability and spring terminal connection compatibility. Socketable mounting of the original part differs from the DIN Rail design of the substitute. Mechanical integration assessment is necessary before installation.

Q: What is the significance of the coil voltage difference (48VAC/DC vs. 48VDC)?

A: The 2821232 accepts both AC and DC coil voltage at 48V. The 2900301 operates on 48VDC only. For systems powered by 48VAC, the 2900301 is not suitable. For 48VDC systems, both parts are electrically equivalent.

Q: Are the switching performance differences between 10ms and 5ms operate times significant?

A: The 2900301 provides faster switching response (5ms vs. 10ms operate time). For general purpose relay applications, this improvement is compatible and does not create incompatibility. Applications with specific timing requirements should verify that faster switching does not affect system behavior.

Q: What does the inclusion of "Socket Included" in the 2900301 specification mean?

A: The 2900301 includes a socket accessory, enabling retrofit installation into existing socketable relay bases. This feature facilitates replacement of the 2821232 in applications where socket-based mounting infrastructure exists, despite the primary DIN Rail mounting design.

Q: Are the contact materials (Silver Nickel vs. Silver Tin Oxide) interchangeable?

A: Both Silver Nickel (AgNi) and Silver Tin Oxide (AgSnO) contact materials are suitable for general purpose relay switching applications. The material difference does not affect functional equivalence for standard switching loads. Specialized applications involving specific load characteristics should verify material compatibility.

Q: What compliance certifications apply to both parts?

A: Both the 2821232 and 2900301 carry RoHS compliance, EAR99 ECCN classification, and identical HTSUS codes (8536.41.0020). The 2900301 additionally carries ROHS3 compliance and REACH Affected status, indicating enhanced regulatory alignment with current standards.

Q: Is the extended operating temperature range of the 2900301 (-40°C to 60°C vs. -20°C to 50°C) a compatibility concern?

A: The extended temperature range of the 2900301 is compatible with the original specification. Applications operating within the original -20°C to 50°C range experience no adverse effects. The broader range provides additional operational margin for temperature-sensitive environments.