Reliable Electrical Status Feedback for Control Systems
Auxiliary Contacts are low-power electrical signaling contacts used to indicate the operating status of breakers, contactors, and switches. They provide real-time feedback such as ON/OFF position, trip status, and fault indication to control panels, PLC systems, and monitoring devices.
Moreover, these contacts help automate alarms, interlocking systems, and remote monitoring functions. Because they operate independently from the main power circuit, they ensure safe signaling without affecting load current.
🔄 How Auxiliary Contacts Work
➡️ When the breaker or contactor changes position
➡️ The auxiliary contact changes state (NO ↔ NC)
➡️ A signal is sent to lamps, relays, PLCs, or meters
➡️ Operators receive real-time system feedback
Therefore, system safety and monitoring accuracy improve significantly.
⭐ Key Features & Benefits
✅ Available in NO / NC combinations
✅ Snap-on easy installation
✅ Compact and durable design
✅ High electrical endurance
✅ Compatible with major brands
✅ Safe low-voltage operation
✅ Reliable signal transmission
✅ Maintenance-free operation
✅ IEC certified quality
🏗️ Applications
Ideal for:
🏭 MCCB and ACB panels
⚡ Motor control centers (MCC)
🔋 ATS and generator panels
🏢 Building Management Systems (BMS)
☀️ Solar monitoring systems
🤖 PLC automation panels
📊 Technical Specifications (Typical)
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Contact Type: 1NO+1NC / 2NO / 2NC
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Rated Voltage: 240V AC / 24V DC
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Rated Current: 5A – 10A
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Mechanical Life: >1 million operations
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Mounting: Side / Front snap-on
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Compatibility: MCCB, MCB, Contactors
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Insulation Class: Class II
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Standard: IEC 60947
🛒 Why Buy from SMS Engineering?
At SMS Engineering, we supply high-quality auxiliary contacts compatible with Schneider, ABB, Hyundai, Terasaki, and LS breakers. We provide technical guidance, competitive market pricing (MT), and fast delivery across Pakistan 🇵🇰.
🔗 Internal links:
https://www.smsengs.com/product/schneider-mccb-4-pole-adjustable/
https://www.smsengs.com/product/ats-panel/
https://www.smsengs.com/product/bms-panel-building-management-system-panels/
🌐 External links:
https://www.se.com
https://en.wikipedia.org/wiki/Electrical_contact
