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Match the complete marking
Include the complete 1SDA073674R1/1SDA073687R1 reference on your enquiry and quotation. Retain both order codes, YO and YC designations, control-voltage labels and the installed Emax 2 breaker reference.
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Check the offered item before ordering
Compare current release-label, connector and mounting photos with the installed accessories. Confirm each release quantity and any separate hardware in the quotation.
Technical specifications for 1SDA073674R1/1SDA073687R1
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Manufacturer:ABB
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Product Category:General Automation
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Spare Part Number:1SDA073674R1/1SDA073687R1
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Weight:1.15 kg
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Tariff Code:8537101190
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Product series:SACE Emax 2
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Accessory type:Electrical operating releases
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Opening release order code:1SDA073674R1
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Opening release designation:YO
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Closing release order code:1SDA073687R1
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Closing release designation:YC
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Rated control supply:220-240 V AC/DC
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Applicable frame family:E1.2, E2.2, E4.2, E6.2
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Control functions:Remote opening and closing
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Closing prerequisite:Closing springs charged; breaker ready to close
Information
Overview
Downloads
Applications / Compatibility
Product Precautions
- ABB 1SDA073674R1/1SDA073687R1 supports separate electrical opening and closing commands in an Emax 2 operating mechanism. Keep the YO trip-command path distinct from the YC close-command path during panel service.
Product type: Circuit breaker operating releases
Opening reference: 1SDA073674R1 / YO
Closing reference: 1SDA073687R1 / YC
Control supply: 220-240 V AC/DC
Opening reference: 1SDA073674R1 / YO
Closing reference: 1SDA073687R1 / YC
Control supply: 220-240 V AC/DC
ABB 1SDA073674R1/1SDA073687R1 brings together two distinct SACE Emax 2 electrical operating accessories. The 1SDA073674R1 YO shunt opening release operates the opening function, while the 1SDA073687R1 YC closing release operates the closing function. These accessories support remote breaker operation through the appropriate auxiliary control circuit.
Both references use a rated control supply of 220-240 V AC/DC and relate to the E1.2, E2.2, E4.2 and E6.2 frame family. The shared voltage range does not make the opening and closing releases interchangeable. Selection must retain the individual order code, operating function and applicable breaker configuration.
The closing function requires charged closing springs and a breaker that is ready to close. The approved control wiring and interlocks remain part of the operating arrangement when either accessory is replaced. These release ratings describe the auxiliary operating circuit, not the breaker's main-circuit voltage, current capacity or interrupting performance.
Both references use a rated control supply of 220-240 V AC/DC and relate to the E1.2, E2.2, E4.2 and E6.2 frame family. The shared voltage range does not make the opening and closing releases interchangeable. Selection must retain the individual order code, operating function and applicable breaker configuration.
The closing function requires charged closing springs and a breaker that is ready to close. The approved control wiring and interlocks remain part of the operating arrangement when either accessory is replaced. These release ratings describe the auxiliary operating circuit, not the breaker's main-circuit voltage, current capacity or interrupting performance.
Controller platform reference: ABB SACE Emax 2 operating accessories. Match release function, frame and control supply.
Technical downloads for ABB 1SDA073674R1/1SDA073687R1: an original ABB accessory reference excerpt and an Apter Power installation and commissioning guide.
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ABB 1SDA073674R1/1SDA073687R1 technical reference
Original ABB excerpts - PDF, 2 pages. YO/YC order-code and operating-function references; match the release function, control supply and complete breaker configuration. -
ABB 1SDA073674R1/1SDA073687R1 installation guide
Prepared by Apter Power - PDF, 5 pages. Release identification, electrical and stored-energy isolation, control-circuit checks and separate opening/closing tests.
The technical reference preserves selected original ABB pages. The installation guide supports preparation and verification; apply the original breaker service instructions and site procedures during work.
System and reference context: The combined listing retains both ABB order codes. Use 1SDA073674R1 for the YO opening function and 1SDA073687R1 for the YC closing function within the applicable Emax 2 breaker configuration.
Application boundary: These accessories form part of the breaker operating circuit. Their 220-240 V AC/DC control rating does not define the switchboard power rating, interrupting capacity or protection settings. Match the complete breaker and control scheme before installation.
Application boundary: These accessories form part of the breaker operating circuit. Their 220-240 V AC/DC control rating does not define the switchboard power rating, interrupting capacity or protection settings. Match the complete breaker and control scheme before installation.
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Remote opening control
Use the YO release in the approved electrical opening-command circuit. Identify the opening reference and preserve the installed trip wiring and breaker interlocks. -
Remote closing control
Use the YC release for electrical closing commands when the breaker mechanism is ready. Confirm spring-charge state and closing permissives before the controlled functional test. -
Switchboard accessory replacement
Match the release function, control voltage and Emax 2 frame when servicing installed low-voltage switchgear. Compare the removed and replacement markings before reconnecting the control circuit. -
Control-circuit commissioning
Verify opening and closing as separate commands under the site test procedure. Record the fitted order codes and confirm that each command produces its intended mechanism response.
Confirm the complete supplied reference and installed breaker configuration before isolation, replacement or commissioning.
Identify opening versus closing
Do not interchange YO and YC. Keep 1SDA073674R1 and 1SDA073687R1 associated with their respective opening and closing circuit positions.
Verify the control supply
Confirm the 220-240 V AC/DC release marking against the actual auxiliary supply. Do not use the main-circuit voltage as a substitute for the accessory control rating.
Isolate electrical and stored energy
Apply the breaker service procedure, isolate the relevant main and auxiliary supplies and control stored mechanical energy before accessing the operating mechanism.
Preserve wiring and interlocks
Record the original terminals and conductor identification. Restore the approved release circuit, mechanical arrangement and closing permissives without bypassing interlocks.
Check closing readiness
Confirm the closing springs are charged and the breaker is ready to close before commanding YC. Investigate an inhibited closing condition rather than repeatedly forcing the command.
Test each operating function
Perform separate controlled opening and closing checks using the installed breaker instructions. Resolve abnormal behavior and retain the fitted order codes and test record before release.
Alternative Names
1SDA073674R1 / 1SDA073687R1
Technical notes
Function relationship: YO and YC occupy separate opening and closing roles. Retain both complete order codes in the breaker accessory record.
Control boundary: The 220-240 V AC/DC rating applies to the release supply. Preserve breaker interlocks and charged-spring readiness for closing.
Technical reference: ABB SACE Tmax T/ML, Emax 2/ML Technical Catalog, 1SDC007907D0201 (November 2019); ABB SACE Emax 2 Technical Catalog, 1SDC200039D0204 (January 2019).
FAQ View All FAQ
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What is the difference between the two codes in 1SDA073674R1/1SDA073687R1?1SDA073674R1 is the YO shunt opening release; 1SDA073687R1 is the YC closing release. They perform different operating functions and are not alternative numbers for the same release.
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What control supply applies to 1SDA073674R1/1SDA073687R1?Both order codes identify 220-240 V AC/DC operating releases. Match the voltage marking to the actual auxiliary control circuit before connection.
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Which breaker frame family applies to 1SDA073674R1/1SDA073687R1?The applicable Emax 2 frame family is E1.2, E2.2, E4.2 and E6.2. Confirm the complete breaker execution and accessory arrangement before fitting either release.
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What must be ready before the closing release in 1SDA073674R1/1SDA073687R1 can operate?The closing springs must be charged and the circuit breaker must be ready to close. The closing command remains subject to the operating mechanism and installed permissives.
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Are the two functions in 1SDA073674R1/1SDA073687R1 interchangeable?No. YO performs opening and YC performs closing. Equal control-voltage ratings do not make their mechanical functions or circuit positions interchangeable.
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Does the voltage marking on 1SDA073674R1/1SDA073687R1 define the breaker main-circuit rating?No. It is the release control-supply rating. The breaker main-circuit voltage, current and interrupting capacity are separate equipment ratings.
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Which circuit information should be retained when replacing 1SDA073674R1/1SDA073687R1?Record the opening and closing order codes, auxiliary-supply designation, terminal identification and installed control diagram. Preserve the original interlock and permissive arrangement.
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How should 1SDA073674R1/1SDA073687R1 be functionally checked after replacement?Use the applicable breaker commissioning procedure to test opening and closing separately. Confirm the intended response, closing readiness and interlock behavior before returning the switchboard to service.
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