SPD-277P-20KA Equivalent & Substitute Parts

Part Overview

The SPD-277P-20KA is a transient voltage suppressor (TVS) module designed for lighting surge protection in 120-277VAC applications. Manufactured by ERP Power, LLC, this single-pole device provides thermal protection with a maximum continuous operating voltage (MCOV) of 320VAC and a maximum discharge current of 20 kA at 8/20µS pulse duration. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for system maintenance and component replacement in existing installations.

Substiute Parts

SPD-277P-20KA

ERP Power, LLCIn Stock: 988SPD-277P-20KA Datasheet

Current PartRFQ

BSP3-277-20KA

Thomas Research ProductsIn Stock: 1048BSP3-277-20KA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPD-277P-20KA is determined by the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute must support a maximum continuous operating voltage (MCOV) of 320VAC or higher to maintain protection in 120-277VAC applications.

Discharge Current Capacity: The substitute must provide a maximum discharge current (8/20µS) of at least 20 kA to match the surge protection capability of the original part.

Form Factor and Mounting: The substitute must maintain the Module Only form factor with Free Hanging mounting type to ensure physical compatibility in existing installations.

Regulatory Compliance: The substitute must carry relevant approval agencies (cURus, UL, or CE) to meet safety and certification requirements.

Pole Configuration: While the original part is single-pole, multi-pole variants (such as 3-pole configurations) can serve as substitutes in applications where additional circuit protection is required, provided all other electrical parameters are met or exceeded.

The BSP3-277-20KA qualifies as a substitute based on these criteria, despite its 3-pole configuration, as it meets or exceeds all critical electrical parameters and maintains regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The BSP3-277-20KA is the identified substitute for the obsolete SPD-277P-20KA. Selection of this alternative is based on the following engineering criteria:

Electrical Equivalence: The BSP3-277-20KA meets the maximum discharge current requirement of 20 kA at 8/20µS and maintains voltage rating compatibility at 320VAC MCOV, ensuring equivalent surge protection performance in 120-277VAC circuits.

Enhanced Regulatory Coverage: The substitute carries expanded approval agency certifications (CE, cURus, UL) compared to the original part (cURus only), providing broader compliance coverage for international and domestic applications.

Active Product Status: The BSP3-277-20KA is an active product with confirmed inventory availability (1010 Pcs), ensuring reliable sourcing for replacement and new installations.

Pole Configuration Consideration: The 3-pole configuration of the BSP3-277-20KA provides multi-circuit protection capability. In single-circuit applications, only one pole requires activation, while the additional poles remain available for future expansion or parallel circuit protection.

Compliance Alignment: Both parts maintain MSL 1 (Unlimited) moisture sensitivity and RoHS compliance, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the BSP3-277-20KA directly replace the SPD-277P-20KA in existing installations?

A: Yes. The BSP3-277-20KA meets all critical electrical parameters (320VAC MCOV, 20 kA maximum discharge current) and maintains the same Free Hanging mounting type. The 3-pole configuration does not prevent single-circuit operation; only the required pole(s) need to be connected.

Q: What is the significance of the 3-pole versus 1-pole configuration?

A: The SPD-277P-20KA is a single-pole device protecting one circuit. The BSP3-277-20KA provides three independent poles, each capable of protecting separate circuits. In replacement scenarios, one pole of the BSP3-277-20KA can be utilized for the original single-circuit application.

Q: Are there differences in thermal protection between these parts?

A: The SPD-277P-20KA specifies thermal protection as a feature. The BSP3-277-20KA does not list thermal protection in the provided specifications. Verify thermal protection requirements for your specific application before selection.

Q: How do the approval agencies differ between these parts?

A: The SPD-277P-20KA carries cURus certification. The BSP3-277-20KA carries CE, cURus, and UL certifications. The expanded certifications of the substitute provide compliance for broader geographic and regulatory requirements.

Q: What is the packaging difference between these parts?

A: The SPD-277P-20KA packaging is not specified. The BSP3-277-20KA is supplied in Box packaging. Confirm packaging requirements for your procurement and storage procedures.

Q: Are there operating temperature differences?

A: The SPD-277P-20KA operates from -40°C to 85°C. The BSP3-277-20KA operating temperature range is not specified in the provided data. Verify temperature requirements for your application environment.