SR203AM01 Equivalent & Substitute Parts Reference

Part Overview

The SR203AM01 is a DIN rail-mounted relay manufactured by Omron Automation and Safety, configured as a 4PST relay with 3 Form A and 1 Form B contact arrangement. This component operates on 24VAC/DC coil voltage with a maximum switching capacity of 230VAC and 24VDC. The SR203AM01 is classified as obsolete, making identification of functionally equivalent alternatives necessary for system maintenance and new design implementations where this model is no longer available from primary sources.

Substiute Parts

SR203AM01

Omron Automation and SafetyIn Stock: 801SR203AM01 Datasheet

Current PartRFQ

ES-FA-6G

Banner Engineering CorporationIn Stock: 725ES-FA-6G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SR203AM01 is determined by the following critical parameters:

Contact Configuration: The 4PST-3NO/1NC arrangement (3 Form A, 1 Form B) is the primary functional requirement. Substitute parts must provide identical contact form and pole count.

Coil Voltage: 24VAC/DC operation is mandatory for circuit compatibility. Substitute parts must support this voltage specification.

Mounting Type: DIN rail mounting is required for mechanical compatibility with existing installations. Substitute parts must maintain this mounting standard.

Termination Style: Screw terminal connections are specified. Substitute parts must use identical termination methodology.

Electrical Ratings: Contact current rating, switching voltage, and coil specifications must meet or exceed the original part requirements to ensure safe operation within the application circuit.

Regulatory Compliance: ECCN and HTSUS classifications must align with the original part for supply chain and regulatory consistency.

The ES-FA-6G from Banner Engineering Corporation meets these substitution criteria while providing enhanced electrical ratings and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ES-FA-6G is a direct functional substitute for the SR203AM01 based on matching contact configuration, coil voltage, mounting type, and termination style. The ES-FA-6G provides superior electrical ratings with a 6 A contact current capacity compared to the SR203AM01's 3 A rating, and increased switching voltage limits of 250VAC and 250VDC versus 230VAC and 24VDC.

The ES-FA-6G maintains active product status with current manufacturing support, ensuring long-term availability and supply chain continuity. Both components share identical ECCN and HTSUS classifications, maintaining regulatory consistency.

The operating temperature range of the ES-FA-6G (0°C ~ 50°C) is narrower than the SR203AM01 (-5°C ~ 55°C). Applications requiring operation below 0°C or above 50°C must evaluate this specification against specific environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the ES-FA-6G directly replace the SR203AM01 in existing installations?

A: Yes. Both components share identical mounting type (DIN rail), coil voltage (24VAC/DC), contact form (4PST-3NO/1NC), and termination style (screw terminal). Physical and electrical compatibility is confirmed.

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

A: The ES-FA-6G provides higher contact current rating (6 A vs. 3 A) and increased switching voltage limits (250VAC/250VDC vs. 230VAC/24VDC). The ES-FA-6G has a narrower operating temperature range (0°C ~ 50°C vs. -5°C ~ 55°C) and includes a lighted indicator feature. The ES-FA-6G maintains active product status while the SR203AM01 is obsolete.

Q: Are there any compliance or regulatory considerations for substitution?

A: Both components share identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications, ensuring regulatory consistency. The ES-FA-6G is RoHS3 compliant and REACH unaffected.

Q: What is the impact of the higher current rating on circuit design?

A: The ES-FA-6G's 6 A contact rating exceeds the SR203AM01's 3 A specification. Applications designed for 3 A operation will function safely with the ES-FA-6G. Applications requiring the full 6 A capacity benefit from the increased capability.

Q: Does the operating temperature range difference affect substitution?

A: The ES-FA-6G operates from 0°C to 50°C, while the SR203AM01 operates from -5°C to 55°C. Applications operating within the 0°C to 50°C range are unaffected. Applications requiring operation below 0°C or above 50°C must verify compatibility with the narrower ES-FA-6G range.

Q: What is the significance of the lighted indicator feature on the ES-FA-6G?

A: The ES-FA-6G includes a lighted indicator for operational status visibility. This feature provides no functional impact on relay operation and is an additional capability not present in the SR203AM01.