SI-LS31PBF Equivalent & Substitute Parts

Part Overview

The SI-LS31PBF is a safety limit switch manufactured by Banner Engineering Corporation, configured as a 3PST-2NC/1NO chassis mount unit rated for 3A AC at 120V. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance and component procurement.

The SI-LS31PBF features a round pin plunger actuator with screw terminal connections and IP65 ingress protection, suitable for industrial control applications requiring dual normally-closed and single normally-open circuit configurations. With a mechanical life rating of 1,000,000 cycles and operating temperature range of -30°C to 80°C, this switch serves critical safety and interlock functions in industrial equipment.

Due to its obsolete status, sourcing direct replacements may present procurement challenges. Alternative components must maintain compatibility across electrical ratings, mechanical mounting interfaces, and circuit configuration requirements.

Substiute Parts

SI-LS31PBF

Banner Engineering CorporationIn Stock: 989SI-LS31PBF Datasheet

Current PartRFQ

SI-LS83PBE

Banner Engineering CorporationIn Stock: 882SI-LS83PBE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SI-LS31PBF requires evaluation against the following critical parameters:

Electrical Compatibility: Current rating must meet or exceed 3A AC; voltage rating must support 120V AC operation.

Circuit Configuration: The 3PST-2NC/1NO configuration (three poles with two normally-closed and one normally-open contact) defines the switching logic. Substitute components must provide equivalent contact arrangements or support the required control logic through alternative circuit topologies.

Mechanical Interface: Chassis mount configuration with screw terminal termination establishes the physical integration requirements. Substitute components must accommodate existing mounting footprints and wiring infrastructure.

Environmental Specifications: IP65 ingress protection and -30°C to 80°C operating temperature range define the environmental operating envelope. Substitute components must maintain these protection and temperature specifications.

Regulatory Compliance: RoHS3 compliance and MSL Level 1 classification establish material and handling requirements for procurement and assembly processes.

The SI-LS83PBE is identified as a substitute component within the Banner Engineering Corporation product family, sharing common environmental specifications and termination methodology.

Parameter Comparison

Engineering Selection Recommendations

The SI-LS83PBE represents an active product alternative within the Banner Engineering Corporation portfolio. Key selection considerations include:

Product Status: The SI-LS83PBE maintains active product status, ensuring ongoing availability and manufacturer support, contrasting with the obsolete SI-LS31PBF.

Regulatory Certifications: The SI-LS83PBE carries CE, CSA, and UL approvals, providing documented compliance for industrial control applications across multiple regulatory jurisdictions.

Electrical Ratings: The SI-LS83PBE provides 6A AC current capacity, exceeding the SI-LS31PBF specification of 3A, and supports both AC and DC voltage operation at 120V, extending application flexibility.

Circuit Configuration Differences: The SI-LS83PBE implements DPST-NC (dual pole, single throw, normally-closed) configuration, differing from the SI-LS31PBF 3PST-2NC/1NO arrangement. System integration requires verification that the dual-pole configuration satisfies the control logic requirements of the original application.

Environmental Specifications: Both components maintain identical IP65 ingress protection and -30°C to 80°C operating temperature specifications, ensuring environmental compatibility.

Selection of the SI-LS83PBE as a substitute requires confirmation that the DPST-NC circuit topology aligns with the control system requirements previously satisfied by the 3PST-2NC/1NO configuration.

Frequently Asked Questions (FAQ)

Q: Can the SI-LS83PBE directly replace the SI-LS31PBF in existing installations?

A: Direct physical and electrical replacement requires verification of circuit configuration compatibility. The SI-LS83PBE DPST-NC topology differs from the SI-LS31PBF 3PST-2NC/1NO configuration. Both components share identical screw terminal termination, IP65 protection, and operating temperature specifications. System integration assessment is necessary to confirm functional equivalence.

Q: What are the key electrical differences between these components?

A: The SI-LS83PBE provides 6A AC current capacity compared to the SI-LS31PBF 3A rating. The SI-LS83PBE supports both 120V AC and DC operation, while the SI-LS31PBF is specified for 120V AC only. These enhanced ratings provide operational flexibility for applications with higher current demands or DC control requirements.

Q: Are both components RoHS compliant?

A: The SI-LS31PBF is specified as ROHS3 compliant. RoHS compliance status for the SI-LS83PBE is not provided in the available technical parameters.

Q: What certifications apply to the SI-LS83PBE?

A: The SI-LS83PBE carries CE, CSA, and UL approvals, documenting compliance for industrial control applications across multiple regulatory frameworks. Certification status for the SI-LS31PBF is not specified in available documentation.

Q: How do the mechanical specifications compare?

A: Both components feature screw terminal termination and IP65 ingress protection. The SI-LS31PBF specifies round pin plunger actuator with chassis mount configuration. The SI-LS83PBE is classified as a panel disconnect interlock with non-locking type designation. Mounting interface compatibility requires physical verification against existing installation requirements.