R1973ABLKREDEF2 Equivalent & Substitute Parts

Part Overview

The R1973ABLKREDEF2 is an illuminated rocker switch manufactured by E-Switch, designed for panel-mount, snap-in applications. This SPST (Single Pole Single Throw) switch is rated for 9A AC at 125V and features a red concave actuator with neon red illumination. The product is currently active in production with 987 units in stock. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and functional characteristics align with the original specification, enabling seamless integration in applications where the primary part becomes unavailable.

Substiute Parts

R1973ABLKREDEF2

E-SwitchIn Stock: 1091R1973ABLKREDEF2 Datasheet

Current PartRFQ

LRA22H2FBRLN

ZF ElectronicsIn Stock: 4913LRA22H2FBRLN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R1973ABLKREDEF2 is determined by the following critical parameters:

Electrical Compatibility: The substitute must maintain SPST circuit configuration with AC voltage rating of 125V. Current rating must be equal to or greater than 9A to ensure adequate load capacity.

Mechanical Compatibility: Panel mount, snap-in mounting type with quick connect termination (0.187" / 4.7mm) is required. Panel cutout dimensions must be compatible with the original specification (19.20mm x 12.80mm rectangular opening).

Functional Characteristics: Illuminated rocker switch with concave actuator and red color must be preserved. Neon red illumination type ensures consistent visual indication across applications.

Environmental & Lifecycle Parameters: Operating temperature range, mechanical life, and electrical life ratings are evaluated to confirm suitability for the intended application environment.

Compliance & Standards: RoHS3 compliance and REACH unaffected status must be maintained.

The substitute part LRA22H2FBRLN from ZF Electronics meets these criteria with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The LRA22H2FBRLN from ZF Electronics is qualified as a direct substitute for the R1973ABLKREDEF2. Both parts maintain active product status and full ROHS3 compliance. The ZF Electronics part carries additional certifications (CE, cULus, VDE) which provide expanded regulatory coverage for international applications.

The substitute part demonstrates superior mechanical durability with 100,000 cycles compared to 30,000 cycles in the original part. The higher current rating (10A versus 9A) provides additional safety margin for the specified 125V AC application. Panel cutout dimensions vary by less than 0.2mm, which is within standard manufacturing tolerances for panel-mount snap-in switches.

The operating temperature range of the substitute (-20°C to 65°C) is narrower than the original (-30°C to 65°C). Applications requiring operation below -20°C must retain the R1973ABLKREDEF2. The electrical life rating of the substitute (6,000 cycles) is lower than the original (10,000 cycles), which should be evaluated against specific application duty cycles.

Frequently Asked Questions (FAQ)

Q: Can the LRA22H2FBRLN be used as a direct drop-in replacement for the R1973ABLKREDEF2?

A: Yes, the LRA22H2FBRLN is mechanically and electrically compatible. Both parts use identical quick connect termination (0.187" / 4.7mm), SPST configuration, and 125V AC rating. Panel cutout dimensions are within standard manufacturing tolerances (19.10mm x 12.90mm versus 19.20mm x 12.80mm).

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Current rating: LRA22H2FBRLN is rated 10A versus 9A for the R1973ABLKREDEF2; (2) Mechanical life: LRA22H2FBRLN offers 100,000 cycles versus 30,000 cycles; (3) Operating temperature minimum: LRA22H2FBRLN operates to -20°C versus -30°C; (4) Electrical life: LRA22H2FBRLN is rated 6,000 cycles versus 10,000 cycles; (5) Certifications: LRA22H2FBRLN includes CE, cULus, and VDE approvals.

Q: Are there any applications where the R1973ABLKREDEF2 must be retained?

A: Yes. Applications requiring operation below -20°C ambient temperature must use the R1973ABLKREDEF2, as the substitute part is only rated to -20°C minimum. Applications with electrical duty cycles exceeding 6,000 cycles should evaluate the lower electrical life rating of the substitute.

Q: Do both parts use the same illumination voltage?

A: No. The R1973ABLKREDEF2 uses 250 VAC illumination voltage, while the LRA22H2FBRLN uses 125 VAC illumination voltage. Both use neon red illumination type. Verify that the circuit design accommodates the 125 VAC illumination requirement of the substitute part.

Q: What is the inventory status for each part?

A: The R1973ABLKREDEF2 has 987 units in stock. The LRA22H2FBRLN has 4,846 units in stock, providing greater availability for immediate procurement.