D2450P Solid State Relay - Equivalent & Substitute Parts

Part Overview

The D2450P is an active, in-stock solid state relay (SSR) manufactured by Sensata-Crydom, designed for industrial switching applications requiring SPST-NO (1 Form A) configuration with 50A load capacity. This chassis-mount relay operates with AC zero-cross output and accepts 3–32VDC input control signals to switch loads in the 24–280V AC range. The hockey puck package provides robust thermal management and screw terminal connectivity for permanent installation.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges for this product category.

Substiute Parts

D2450P

Sensata-CrydomIn Stock: 896D2450P Datasheet

Current PartRFQ

84137120N

CrouzetIn Stock: 84984137120N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the D2450P is determined by the following criteria:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Load Current Rating: Must be rated for 50A minimum to support the specified load
• Package Type: Must be hockey puck chassis mount with screw terminal connectivity
• Output Type: Must support AC zero-cross switching for compatible control behavior
• Input Voltage Compatibility: Control input must accept 3–32VDC range or a subset thereof
• Load Voltage Range: Must accommodate the 24–280V AC operating window or extend beyond it
• Product Status: Active status ensures ongoing availability and support

The substitute part 84137120N (Crouzet GN series) meets these criteria with extended load voltage capability (48–660V AC) and compatible input voltage range (4–32VDC).

Parameter Comparison

Engineering Selection Recommendations

Both the D2450P and 84137120N are active products suitable for industrial SSR applications. Selection between them depends on application-specific load voltage requirements:

• D2450P: Select when load voltage operates in the 24–280V AC range and input control signals may be as low as 3VDC
• 84137120N: Select when load voltage exceeds 280V AC (up to 660V AC) or when RoHS compliance documentation is required. Note that the minimum load voltage is 48V AC; applications requiring switching below 48V AC are not compatible with this substitute

Both parts maintain identical 50A load current capacity, SPST-NO switching topology, and zero-cross AC output characteristics. Mechanical compatibility is assured through identical hockey puck packaging and screw terminal termination.

Frequently Asked Questions (FAQ)

Q: Can the 84137120N replace the D2450P in all applications?

A: The 84137120N is compatible with D2450P applications where load voltage is between 48–280V AC and input control voltage is between 4–32VDC. Applications requiring load voltages below 48V AC or input control below 4VDC require the D2450P.

Q: What is the significance of the zero-cross output type?

A: Zero-cross switching ensures the relay triggers only when the AC waveform crosses zero volts, reducing electromagnetic interference and extending component life in inductive load applications. Both parts support this feature identically.

Q: Are the hockey puck packages mechanally interchangeable?

A: Yes. Both the D2450P and 84137120N use identical hockey puck chassis-mount packages with screw terminal connectivity, ensuring direct mechanical substitution when electrical parameters are compatible.

Q: Does the 84137120N require different control circuitry?

A: The 84137120N input voltage range (4–32VDC) is compatible with most control circuits designed for the D2450P (3–32VDC). Verify that control signals do not drop below 4VDC in your application.

Q: What is the difference between the load voltage ranges?

A: The D2450P operates from 24–280V AC, while the 84137120N operates from 48–660V AC. The 84137120N cannot switch loads below 48V AC. Select based on your specific load voltage requirements.

Q: Is RoHS compliance a factor in selecting between these parts?

A: The 84137120N is certified RoHS Compliant. If your application or supply chain requires RoHS documentation, the 84137120N provides this assurance. The D2450P RoHS status is not specified in available data.