ABB 1SSS444411R1100 clip-on auxiliary contact accessory
1SSS444411R1100 is clip-on auxiliary contact accessory for ABB AC contactor series. It is mounted on the front or lateral side of matched contactor to expand extra auxiliary switching contacts for status feedback and interlock control. Brand new original products and inspected refurbished units are used for cabinet production and on-site equipment maintenance replacement.
Description
Product Introduction
1SSS444411R1100 is clip-on auxiliary contact accessory for ABB AC contactor series. It is mounted on the front or lateral side of matched contactor to expand extra auxiliary switching contacts for status feedback and interlock control. Brand new original products and inspected refurbished units are used for cabinet production and on-site equipment maintenance replacement.
Model Definition
1SSS is fixed part number prefix of ABB low voltage auxiliary fitting coding rule. 444411 refers to base hardware specification of this auxiliary contact module. Suffix R1100 means factory standard hardware revision and default contact configuration. Alternate revision codes only adjust minor assembly parts without changing mounting size and electrical parameters.
Technical Specifications
Suitable for AC/DC control circuit up to 250V rated voltage. Snap-in quick mounting design matching corresponding ABB contactor frame size. Operating ambient temperature ranges from -20℃ to +60℃, storage temperature -40℃~+85℃, relative humidity 5%~95% non-condensing. Protection grade IP20, compliant with CE and IEC industrial standards with long mechanical switching lifespan.
Interface and Communication Configuration
Screw wiring terminals are arranged for external control cable connection. No onboard communication interface or fieldbus port; signal transfer is fully completed via hard-wired control wiring linked to peripheral control components.
Core Functions
Open and close synchronously together with main contactor mechanical movement. Supply isolated switch signals for equipment running feedback to PLC, indicator lamp drive and safety interlock loop. Supplement spare contact points when the contactor’s original built-in auxiliary contacts are inadequate for control logic layout.
Application Scenarios
Commonly equipped inside pump, fan and compressor motor control cabinets, low voltage distribution panels of chemical, metallurgy and water treatment facilities for logic interlock and operation status signal transmission.
Operation and Maintenance Instructions
Cut off control circuit power before mounting or removing the auxiliary contact block and wait for residual voltage discharge. Perform semi-annual maintenance to clear terminal dust with dry compressed air and fasten wiring screws regularly. In case of abnormal contact action, check snap fitting status first before part replacement, prevent excessive overload current to avoid contact burning damage.
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