90-Degree Bent Terminal Micro Switch | Smart Meter Changeover (NO+NC) Tamper Detection by Pran Electronics Pvt. Ltd.
In the precision-driven world of smart grid technology, hardware security must be both robust and space-efficient. The 90-Degree Bent Terminal Micro Switch by Pran Electronics Pvt. Ltd. is a specialized electromechanical component designed specifically for Smart Meter Cover-Open and Tamper Detection.
Featuring a unique right-angle terminal configuration, this switch allows for horizontal mounting or low-profile integration, making it the ideal choice for modern, slimline single-phase and three-phase smart meters manufactured in India.
Engineered for Advanced Tamper Security
Smart meters are the backbone of the “Make in India” energy revolution. This Pran Electronics Micro Switch provides the critical interface between the meter’s physical casing and its digital security log:
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Changeover (SPDT) Configuration: Equipped with both Normally Open (NO) and Normally Closed (NC) contacts. This allows the meter’s microcontroller to monitor a continuous security loop. If the cover is opened, the switch toggles, instantly triggering a “Tamper Event” signal via the meter’s communication module (RF/GPRS).
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90-Degree Bent Terminals: The right-angle (90°) terminal design is engineered for specialized PCB layouts. It allows the switch to be mounted in tight corners or at the edge of the board, directing the terminals away from other sensitive components to prevent electrical interference.
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Case-Open Detection: The high-sensitivity plunger is designed to be held in a “depressed” state by the meter’s outer housing. The moment the housing is pried or unscrewed, the switch actuates, ensuring unauthorized access is recorded even if the meter is powered down.
Key Features & Benefits
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Space-Saving Right-Angle Design: The 90-degree bend reduces the vertical height requirement on the PCB, perfect for compact meter designs.
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Snap-Action Reliability: Features a precision internal spring mechanism that ensures a clean, fast break of the circuit, eliminating “signal bounce” and false alarms.
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High-Grade Contact Material: Utilizing silver-plated copper alloy contacts to prevent oxidation, ensuring the switch remains functional over a 10–15 year service life.
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Industrial Temperature Resistance: Built to operate in India’s diverse climate, from extreme heat to high humidity, without compromising mechanical integrity.
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Make in India Excellence: Proudly manufactured by Pran Electronics Pvt. Ltd., ensuring compliance with IS standards for smart metering.
Technical Specifications
| Feature | Specification |
| Switch Type | Sub-miniature Snap-Action Micro Switch |
| Circuitry | Changeover / SPDT (1 NO + 1 NC) |
| Terminal Style | 90-Degree Bent (Right Angle) |
| Mounting | PCB Through-Hole (THT) |
| Contact Material | Silver Alloy (Anti-Corrosive) |
| Operating Force | Optimized for Meter Cover Tension |
| Mechanical Life | >100,000$ Cycles |
Why Choose Pran Electronics for Smart Metering?
Pran Electronics Pvt. Ltd. is a trusted partner for India’s leading Meter OEMs and DISCOM suppliers. By integrating their 90-degree micro switch, you benefit from:
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Revenue Protection: Accurate tamper detection is the primary tool for reducing Non-Technical Losses (NTL) and electricity theft.
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Customized Engineering: The 90-degree terminal bend can be tailored to specific PCB heights, ensuring a perfect fit for proprietary meter enclosures.
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Local Supply Chain: Sourcing from a premier Indian manufacturer reduces lead times and supports localized quality control audits.
Primary Applications
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Smart Energy Meters: Main cover and terminal block tamper monitoring.
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Gas & Water Meters: Detecting unauthorized removal of the electronic module.
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Data Concentrators: Securing the gateway hardware in AMI (Advanced Metering Infrastructure).
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Industrial Security Systems: Door and panel interlocks for control cabinets.



