Equivalent & Substitute Parts for RC-200124-RN

Part Overview

The RC-200124-RN is a general purpose relay manufactured by Littelfuse Inc., featuring a single pole double throw (SPDT) contact configuration with a 24VDC coil and 20A contact rating. This component is classified as obsolete, necessitating identification of active equivalent alternatives for continued system support and procurement.

Substiute Parts

RC-200124-RN

Littelfuse Inc.In Stock: 1033RC-200124-RN Datasheet

Current PartRFQ

CB1F-R-24V

Panasonic Electric WorksIn Stock: 1689CB1F-R-24V Datasheet

MFR RecommendedRFQ

CB1F-R-M-24V

Panasonic Electric WorksIn Stock: 1108CB1F-R-M-24V Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete RC-200124-RN is based on electrical and mechanical parameter alignment within the general purpose relay category. The following criteria establish substitution validity:

Primary Matching Criteria:

• Coil voltage: 24VDC (exact match required)
• Contact form: SPDT (1 Form C) configuration
• Contact rating: 20A minimum
• Coil type: Non latching operation
• Operating temperature range: -40°C to 85°C minimum
• Contact material: Silver alloy composition
• Must release voltage: 2.4VDC

Secondary Compatibility Factors:

• Must operate voltage: Substitute parts operate at 14VDC, which is lower than the original 15.6VDC specification but remains within acceptable relay operation margins
• Termination compatibility: Both substitute parts maintain plug-in termination capability
• Resistor feature: Maintained in all substitute options

The two identified substitutes (CB1F-R-24V and CB1F-R-M-24V) are manufactured by Panasonic Electric Works and meet all primary electrical criteria. The distinction between these substitutes lies in mounting type: CB1F-R-24V is socketable, while CB1F-R-M-24V is chassis mount.

Parameter Comparison

Engineering Selection Recommendations

CB1F-R-M-24V Selection Criteria:

The CB1F-R-M-24V is the primary substitute for RC-200124-RN applications. This part maintains chassis mount configuration identical to the original component, eliminating mechanical redesign requirements. The CB1F-R-M-24V is manufactured by Panasonic Electric Works with active product status, ensuring long-term availability and supply chain stability. This substitute achieves RoHS compliance and incorporates sealed flux protection, providing enhanced environmental protection compared to the original specification.

CB1F-R-24V Selection Criteria:

The CB1F-R-24V serves as an alternative substitute where socketable mounting is acceptable or preferred. This configuration provides flexibility in installation methodology while maintaining all critical electrical parameters. The socketable design may reduce assembly labor in applications where relay replacement frequency is anticipated.

Compliance Considerations:

Both substitute parts are RoHS compliant and cadmium-free, meeting modern environmental and regulatory requirements. The original RC-200124-RN carries obsolete status with non-applicable RoHS designation, indicating manufacture prior to RoHS implementation. Substitution with either Panasonic part ensures compliance with current environmental standards.

Electrical Performance:

The substitute parts operate at 14VDC must-operate voltage compared to the original 15.6VDC specification. This represents a 10.3% reduction in operating threshold. Both substitutes maintain the 2.4VDC must-release voltage and 20A contact rating. The switching voltage specification increases from 24VDC nominal to 28VDC nominal in the substitutes, providing enhanced voltage margin for switching applications.

Frequently Asked Questions (FAQ)

Q: Can CB1F-R-24V and CB1F-R-M-24V be used interchangeably with RC-200124-RN?

A: Both Panasonic parts meet the electrical requirements for substitution. Selection depends on mounting configuration requirements. CB1F-R-M-24V maintains chassis mount compatibility with the original. CB1F-R-24V requires socketable mounting accommodation.

Q: What is the significance of the lower must-operate voltage in the substitute parts?

A: The substitute parts operate at 14VDC compared to the original 15.6VDC. This lower threshold indicates the substitutes will energize at a lower coil voltage. In 24VDC nominal systems, this difference is not operationally significant and represents improved sensitivity.

Q: Are the substitute parts sealed?

A: Yes. Both CB1F-R-24V and CB1F-R-M-24V include sealed flux protection, providing enhanced environmental protection not specified in the original RC-200124-RN.

Q: What is the difference between CB1F-R-24V and CB1F-R-M-24V?

A: The primary difference is mounting type. CB1F-R-24V is socketable, while CB1F-R-M-24V is chassis mount. Both share identical electrical specifications and coil parameters.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both CB1F-R-24V and CB1F-R-M-24V are RoHS compliant with cadmium-free contact material. The original RC-200124-RN predates RoHS requirements.

Q: What is the coil current requirement for the substitute parts?

A: Both substitutes require 84 mA coil current at 24VDC, consuming 2W coil power with 287 ohms coil resistance.

Q: Do the substitute parts maintain the same termination style?

A: Both substitutes maintain plug-in termination capability. CB1F-R-M-24V uses quick connect 0.250" (6.3mm) termination. CB1F-R-24V offers both plug-in and quick connect options.

Q: What are the switching speed characteristics of the substitute parts?

A: Both CB1F-R-24V and CB1F-R-M-24V operate with 15 ms operate time and 15 ms release time.