BSP3-208/240 Equivalent & Substitute Parts

Part Overview

The BSP3-208/240 is a three-pole transient voltage suppressor module manufactured by Thomas Research Products, designed for lighting surge protection at 240V. This active product provides circuit protection against transient overvoltages in AC and DC applications. The module is housed in a free-hanging form factor and carries dual approvals from cURus and UL standards bodies.

Substitute parts are identified when they meet the core electrical parameters required for transient voltage suppression while maintaining compatibility with the application's voltage and current specifications.

Substiute Parts

BSP3-208/240

Thomas Research ProductsIn Stock: 1105BSP3-208/240 Datasheet

Current PartRFQ

LSP05240P

Littelfuse Inc.In Stock: 1069LSP05240P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The LSP05240P from Littelfuse Inc. is identified as a substitute based on the following substitution criteria:

Matching Parameters:

• Voltage - Continuous Operating (Max) (MCOV): 275VAC (matches main part specification)
• Current - Discharge (Max) (8/20µS): 10 kA (matches main part specification)
• Category: Transient Voltage Suppressors (TVS)
• Product Status: Active
• Form: Module Only
• Approval Agency: Includes cURus and UL certifications
• RoHS Compliance: ROHS3 Compliant (exceeds RoHS requirement)

Differing Parameters:

• Number of Poles: 1 (versus 3 in main part)
• Mounting Type: Screw (versus Free Hanging in main part)
• Current - Discharge (Nom) (8/20µS): 5 kA (versus 10 kA in main part)
• Packaging: Tray (versus Box in main part)

Parameter Comparison

Engineering Selection Recommendations

Selection between BSP3-208/240 and LSP05240P must account for the following factors based on provided specifications:

Voltage Compatibility: Both parts maintain 275VAC maximum continuous operating voltage, meeting the 240V lighting surge protection requirement.

Current Handling: The BSP3-208/240 provides 10 kA nominal discharge current, while the LSP05240P provides 5 kA nominal discharge current. Both achieve 10 kA maximum discharge capacity. Application current requirements determine which nominal rating is appropriate.

Pole Configuration: The BSP3-208/240 is a three-pole module; the LSP05240P is single-pole. Three-phase or multi-circuit applications require the three-pole configuration or multiple single-pole units.

Mounting Compatibility: Free-hanging versus screw mounting represents a mechanical interface difference. Installation infrastructure must accommodate the selected mounting type.

Regulatory Compliance: Both parts carry cURus and UL approvals. The LSP05240P additionally carries CE certification. RoHS compliance is met by both parts.

Frequently Asked Questions (FAQ)

Q: Can LSP05240P replace BSP3-208/240 in a three-phase application?

A: No. The LSP05240P is single-pole; the BSP3-208/240 is three-pole. Three-phase protection requires either the three-pole BSP3-208/240 or three individual LSP05240P units with appropriate circuit configuration.

Q: Are the voltage ratings compatible between these parts?

A: Yes. Both parts specify 275VAC maximum continuous operating voltage, meeting the 240V application requirement.

Q: What is the difference in discharge current specifications?

A: The BSP3-208/240 provides 10 kA nominal discharge current; the LSP05240P provides 5 kA nominal discharge current. Both achieve 10 kA maximum discharge capacity. Application surge current magnitude determines which nominal rating is required.

Q: Do mounting differences affect electrical performance?

A: No. Free-hanging and screw mounting types are mechanical interface specifications. Electrical performance is determined by voltage, current, and protection level parameters, which are comparable between the parts.

Q: Are both parts RoHS compliant?

A: Yes. The BSP3-208/240 is RoHS Compliant; the LSP05240P is ROHS3 Compliant. Both meet RoHS requirements.

Q: What certifications apply to each part?

A: BSP3-208/240 carries cURus and UL approvals. LSP05240P carries CE, cURus, and UL approvals. Both meet the cURus and UL standards required for lighting surge protection applications.