Auto Reclosers

• An Automatic Circuit Recloser (ACR), or autorecloser, is a self-controlled, pole-mounted switching device that automatically detects an over-current fault on an overhead line, interrupts it and re-closes the circuit to restore supply.
• Engineered for 11 kV and 33 kV overhead distribution feeders, it clears transient faults caused by lightning, wind-blown branches or birds without leaving consumers in a sustained outage.
• Built around maintenance-free vacuum interrupters with solid epoxy / SF6 insulation for reliable, environment-friendly switching over a long service life.
• Controlled by a microprocessor-based numerical controller offering over-current, earth-fault and sensitive earth-fault protection with SCADA / RTU communication for remote operation.
• Available in single-phase and three-phase (gang-operated) versions for feeder sectionalising, rural electrification and protection coordination.

Applications Of Auto Reclosers

• Overhead 11 kV & 33 kV distribution feeders
• Feeder sectionalising & automatic supply restoration
• Rural and remote electrification networks
• Protection coordination with fuses and relays
• Smart-grid and SCADA-controlled networks

Salient Features

• Maintenance-free vacuum interrupter
• Solid-dielectric epoxy / SF6 insulation
• Magnetic actuator operating mechanism
• Numerical relay with O/C, E/F & SEF protection
• Battery back-up for trip and close operations
• SCADA / DNP3 / IEC 60870 communication ready
• Corrosion-resistant, weatherproof enclosure

Technical Specifications

Advantages Of Auto Reclosers

• Reduces outage duration and improves reliability indices (SAIDI / SAIFI)
• Automatically restores supply after transient faults
• Maintenance-free operation with long service life
• Ready for remote monitoring and control
• Compact, lightweight and easy to pole mount

Related Substation Equipment Range

Switching and protection equipment is specified alongside the transformer it protects. Related options include electrical panels for LT distribution and control, servo voltage stabilizers where incoming supply voltage swings, steel fabrication items for transformer tanks, radiators and enclosures, and isolators for off-load switching and safe isolation. Browse the full substation equipment range to compare every model side by side.

Quality Assurance & Testing

Every unit is built at our ISO 9001:2015-certified works in Greater Noida, where Macroplast has designed, manufactured and tested transformers since 1983, with most components — including tanks and steel fabrication — produced in house. Each transformer is routine tested in our dedicated high-voltage and temperature-rise testing laboratory before dispatch, and type tests are carried out in government-accredited laboratories against the relevant IS and IEC standards. See our manufacturing and testing infrastructure for plant and laboratory details, or read more about Macroplast Transformers.