R1973ABLKRILEF4 Equivalent & Substitute Parts

Part Overview

The R1973ABLKRILEF4 is an illuminated rocker switch manufactured by E-Switch, designed for panel-mount applications requiring SPST (Single Pole Single Throw) on-off switching functionality. This component operates at 9A (AC) 125V with a red illuminated concave actuator and quick-connect termination. The product is currently active in production with 670 units in stock.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and functional characteristics align with the original specification, enabling direct replacement in applications where the primary part becomes unavailable or when design requirements permit alternative qualified components.

Substiute Parts

R1973ABLKRILEF4

E-SwitchIn Stock: 753R1973ABLKRILEF4 Datasheet

Current PartRFQ

LRA22H2FBRLN

ZF ElectronicsIn Stock: 4913LRA22H2FBRLN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R1973ABLKRILEF4 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be SPST (Single Pole Single Throw)
• Current rating must be equal to or greater than 9A (AC)
• Voltage rating must be 125V (AC)
• Switch function must be On-Off

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount, Snap-In
• Actuator type must be Concave (Curved) - Illuminated
• Actuator color must be Red
• Termination style must be Quick Connect - 0.187" (4.7mm)
• Panel cutout dimensions must accommodate the rectangular opening (19.20mm x 12.80mm nominal)

Compliance Requirements:

• RoHS3 compliance required
• Product status must be Active

The LRA22H2FBRLN from ZF Electronics qualifies as a substitute based on these parameters. While minor variations exist in illumination type (Neon vs. Incandescent), operating temperature range, and cycle life ratings, the part maintains electrical and mechanical compatibility within the allowed parameter set for this product category.

Parameter Comparison

Engineering Selection Recommendations

Both the R1973ABLKRILEF4 and LRA22H2FBRLN are active products with ROHS3 compliance. The LRA22H2FBRLN provides additional regulatory approvals (CE, cULus, VDE) and higher mechanical life rating (100,000 cycles vs. 30,000 cycles). The substitute part supports equal or higher current capacity (10A vs. 9A) at the same voltage rating.

Selection between these parts should be based on application-specific requirements regarding illumination technology (incandescent vs. neon), operating temperature minimum threshold (-30°C vs. -20°C), and electrical life requirements (10,000 vs. 6,000 cycles). Panel cutout dimensions are nominally equivalent with minimal tolerance variation (19.20mm vs. 19.10mm; 12.80mm vs. 12.90mm).

Frequently Asked Questions (FAQ)

Q: Can the LRA22H2FBRLN directly replace the R1973ABLKRILEF4 in existing panel designs?

A: Panel cutout dimensions are nominally compatible (19.20mm x 12.80mm vs. 19.10mm x 12.90mm). Mechanical fit depends on panel tolerance specifications. Both parts use identical quick-connect termination (0.187" / 4.7mm) and snap-in mounting. Verify panel cutout tolerances before implementation.

Q: What is the difference between incandescent and neon illumination in these switches?

A: The R1973ABLKRILEF4 uses incandescent illumination powered at 24 VDC. The LRA22H2FBRLN uses neon illumination powered at 125 VAC. These represent different illumination technologies with distinct power requirements and visual characteristics. Circuit design must accommodate the appropriate illumination voltage for the selected part.

Q: Are both parts suitable for the same electrical load?

A: The LRA22H2FBRLN is rated for 10A (AC) at 125V, exceeding the R1973ABLKRILEF4 rating of 9A (AC) at 125V. Both parts are suitable for applications within the 9A specification. The substitute part provides additional current capacity margin.

Q: What are the mechanical life differences between these parts?

A: The R1973ABLKRILEF4 is rated for 30,000 mechanical cycles. The LRA22H2FBRLN is rated for 100,000 mechanical cycles. Applications requiring extended switch life may benefit from the higher cycle rating of the substitute part.

Q: Do operating temperature ranges differ between these parts?

A: The R1973ABLKRILEF4 operates from -30°C to 65°C. The LRA22H2FBRLN operates from -20°C to 65°C. Applications requiring operation below -20°C require the original part specification.