SR202AM01 Equivalent & Substitute Parts

Part Overview

The SR202AM01 is a safety relay manufactured by Omron Automation and Safety, configured as a 3PST-NO (3 Form A) relay with 1.5A contact rating and 24VAC/DC coil voltage. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance and new designs requiring equivalent safety performance.

The SR202AM01 features a lighted indicator and screw terminal connections, designed for DIN Rail mounting in industrial control applications. Due to its obsolete status, sourcing direct replacements requires evaluation of substitute components that maintain functional compatibility within the specified electrical and mechanical parameters.

Substiute Parts

SR202AM01

Omron Automation and SafetyIn Stock: 741SR202AM01 Datasheet

Current PartRFQ

G9SE-201

Omron Automation and SafetyIn Stock: 484931G9SE-201 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SR202AM01 is based on the following critical parameters that define functional equivalence:

Primary Substitution Criteria:

• Manufacturer: Omron Automation and Safety (same manufacturer ensures design compatibility)
• Mounting Type: DIN Rail (mechanical form factor requirement)
• Coil Voltage: 24VDC compatibility (electrical supply compatibility)
• Termination Style: Screw Terminal (installation interface requirement)
• Operating Temperature Range: -10°C ~ 55°C (environmental operating envelope)
• ECCN/HTSUS Classification: 8536.41.0020 (regulatory classification alignment)

Secondary Compatibility Parameters:

• Contact Form and Contact Rating must support the application's switching requirements
• Switching Voltage capability must meet or exceed the application's maximum voltage specification

The G9SE-201 is identified as a substitute based on alignment with these primary criteria, though differences in contact configuration and current rating require application-level verification.

Parameter Comparison

Engineering Selection Recommendations

For SR202AM01 Replacement:

The G9SE-201 is an active production substitute from Omron Automation and Safety. Selection of this component requires verification of the following application-specific factors:

1. Coil Voltage Supply: The G9SE-201 operates on 24VDC only. If the application requires 24VAC operation, this substitute is not compatible. Verify the actual coil voltage supply in the target application.

2. Contact Configuration: The SR202AM01 provides 3 Form A contacts (3PST-NO), while the G9SE-201 provides 2 Form A contacts (DPST-NO). Applications requiring three independent switching circuits cannot use the G9SE-201 without circuit redesign.

3. Current Rating: The G9SE-201 supports 5A contact rating, exceeding the SR202AM01's 1.5A specification. This provides design margin for applications within the 1.5A range.

4. Switching Voltage: The G9SE-201 supports 250VAC and 30VDC maximum switching voltage, compared to the SR202AM01's 24VDC maximum. This provides expanded voltage compatibility for load circuits.

5. Product Status: The G9SE-201 is in active production with substantial inventory availability (484,864 pcs), ensuring long-term supply continuity compared to the obsolete SR202AM01.

Frequently Asked Questions (FAQ)

Q: Can the G9SE-201 directly replace the SR202AM01 in all applications?

A: No. The G9SE-201 differs in contact form (2 Form A vs. 3 Form A) and coil voltage operation (24VDC only vs. 24VAC/DC). Direct replacement is possible only in applications requiring 2 independent switching circuits with 24VDC coil supply.

Q: What is the primary limitation when substituting with the G9SE-201?

A: The G9SE-201 provides only 2 Form A contacts instead of 3. Applications requiring three independent relay contacts cannot use this substitute without circuit modification.

Q: Does the G9SE-201 support 24VAC coil voltage?

A: No. The G9SE-201 operates on 24VDC only. If the application requires 24VAC coil supply, this substitute is not compatible.

Q: Are both relays mounted identically on DIN Rail?

A: Yes. Both the SR202AM01 and G9SE-201 use DIN Rail mounting and screw terminal connections, providing identical mechanical installation interfaces.

Q: What is the current rating difference between these relays?

A: The SR202AM01 is rated for 1.5A contact current, while the G9SE-201 is rated for 5A. The G9SE-201 provides higher current capacity for the same switching function.

Q: Are there any regulatory or compliance differences?

A: Both components share identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications, indicating equivalent regulatory treatment for export and tariff purposes.

Q: What is the operating temperature range for both relays?

A: Both the SR202AM01 and G9SE-201 operate within -10°C to 55°C, providing identical environmental operating specifications.