Automatic Changeover with Current Limiter (ACCL)

Keeps power flowing uninterrupted by switching sources and preventing overloads.

Smart Power Transfer for Uninterrupted Supply

ACCL automatically switches between mains and generator power while controlling excess load. It protects your electrical system, prevents power disruptions, and removes the need for manual switching.

Power Switching & Overload Protection

Single-phase ACCLs automatically switch between the mains and generator to limit the excess loading and prevent the generator overloading for a smooth power transition. They play a crucial role in safeguarding the system from excess current damage.

Key Features

  • Automatic Changeover- Switches between utility mains and generator supply based on availability.
  • Current Limiting Mechanism- Prevents excessive load on generators by restricting current draw beyond a preset limit.
  • Fast & Reliable Switching- Makes sure the downtime is minimal with rapid transition between power sources.
  • Overload Protection- Disconnects the load if consumption exceeds the specified limit, protecting generators from damage.
  • Compact & Durable Design- Suitable for residential, commercial, and small industrial applications.

Technical Specifications

  • Operating Voltage- 240V, 50/60Hz
  • Rated Load (EB/DG)- 30A-50A (EB), 20A-50A (DG)
  • Dimensions (WxHxD)- Ranges from 54 x 85 x 75 mm to 101 x 150 x 124 mm
  • Mains Rated Current (AC1 & AC3)- 30A to 50A & Up to 25A
  • Generator Trip Range- 0.5A–50A
  • Starting Voltage Range (Mains, P-N)- 70-300V / 180-300V
  • Operating Voltage (Mains, P-N)- 70-320V / 180-300V
  • Operating Voltage (Gen, P-N)- 170-250V
  • Electrical Endurance- 60,000–100,000 operations
  • Short-Circuit Withstand Capacity- 3kA – 6kA
  • Switching Time- Typically less than 3 seconds
  • Self-Resetting Time- 4 - 10 seconds
  • Ambient Temperature- -10°C to 65°C
  • Enclosure Protection- IP20 / IP30-rated housing for safety and durability
  • Compliance- Conforms to IEC 60947-4 / IEC 60947-6-1

Where Are They Used?

Single-phase ACCLs are widely used in residential buildings to manage the power backup for essential home appliances. These devices are also likely to be used by small industrial setups as well as commercial establishments to protect generators from excessive power & damage.

How to Choose the Appropriate Solution?

  • Current Rating Selection- Choose a model based on total load requirement (e.g., 30A+ for heavier usage).
  • Switching Time- Opt for fast-switching variants to minimize power disruption.
  • Overload Protection Sensitivity- Make sure to limit the current properly to avoid overloading the generator while still supplying the necessary power.
  • Installation & Compliance- Select IP-rated enclosures for added safety and ensure compatibility with IEC/IS standards.

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Reliable Power Switching & Load Protection

Three-phase ACCLs effectively transfer power between the mains and generator while balancing the load across all three phases. They help prevent generator overload and consistently supply power to protect electrical systems from damage. These devices are vital for maintaining uninterrupted power in homes, businesses, and industrial setups.

Key Features

  • Smart Power Transition- Automatically switches between mains and generator for uninterrupted supply.
  • Balanced Load Distribution- Regulates power usage to prevent generator strain and overload.
  • Rapid Response Switching- Ensures a quick and smooth shift between power sources with minimal delay.
  • Enhanced Safety Mechanism- Cuts off power if consumption exceeds the set limit to protect the equipment.
  • Space-Saving & Compact Design- Built for durability and efficiency in residential, commercial, and industrial environments.

Technical Specifications

  • Operating Voltage- Mains (P-N): 180V - 300V, Mains (L-L): 310V - 520V, Generator (P-N): 170V - 250V
  • Rated Load (EB/DG)- 32A - 70A
  • Dimensions (WxHxD)- 101x150x124 mm to 185x220x180 mm
  • Mains Rated Current (AC1 & AC3)- AC1: 32A - 70A, AC3: 18A - 50A
  • Generator Trip Range- 1A - 70A
  • Starting Voltage Range (Mains, P-N)- 180V - 300V
  • Operating Voltage (Mains, P-N)- 180V - 300V
  • Operating Voltage (Gen, P-N)- 170V - 250V
  • Electrical Endurance- 60,000 operations
  • Short-Circuit Withstand Capacity- 6kA
  • Switching Time- 1 second
  • Self-Resetting Time- 4 - 10 seconds
  • Ambient Temperature- -10°C to 65°C
  • Enclosure Protection- IP20
  • Compliance- IEC 60947-4 / IEC 60947-6-1

Where Are They Used?

Three-phase ACCLs are commonly used in industries, commercial spaces, and manufacturing units for a smooth power transfer and to prevent disruptions. They help regulate generator load in residential complexes and large apartment buildings during power outages. Additionally, they play a vital role in hospitals and data centers, where a stable and continuous power supply is critical for essential operations.

How to Choose the Right Three-Phase ACCL?

  • Load Capacity & Application- Select an ACCL based on power needs (e.g., 50A for small businesses, 100A for industries, and 40A for residential complexes).
  • Current Limiting Range- Opt for models like 63A ACCL, offering an adjustable 1A-63A trip range to prevent generator overload.
  • Switching Speed & Performance- Choose an ACCL with fast transfer time (-1s) for efficient power shifts.
  • Safety & Compliance- Look for overload protection and IEC standards compliance.

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Assured Power Management with Accurate Energy Tracking

Metering ACCLs are known for their dual purpose where automatic switching between power sources adds along with tracking energy consumption. Real-time power usage data can be driven to efficiently manage the utilization of energy and helps to optimize the cost.

Key Features

  • Automatic Power Changeover- Effortlessly switches between mains and generator to maintain an uninterrupted supply.
  • Energy Consumption Tracking- Monitors and records power usage for better load management.
  • Efficient Load Balancing- Distributes power evenly across all connected phases to prevent system strain.
  • Quick Response Mechanism- Delivers a smooth transition between power sources without consuming much time.
  • Overload Protection- Automatically disconnects the supply if the load exceeds the defined limit to avoid damage.
  • Compact and Sturdy Build- Designed for durability and can be installed in multiple environments with ease.

Technical Specifications

  • Operating Voltage- Mains (P-N): 180V - 300V, Mains (L-L): 310V - 520V, Generator (P-N): 170V - 250V
  • Rated Load (EB/DG)- M50D+: 50A, DP, M32F+: 32A, FP, M45F+: 45A, FP, M63FS+: 63A, FP
  • Dimensions (WxHxD)- 122x157x148 mm
  • Mains Rated Current (AC1 & AC3)- AC1: 32A - 70A, AC3: 18A - 50A
  • Generator Trip Range- Varies from 1-50A to 1-63A
  • Starting Voltage Range (Mains, P-N)- 180V - 300V
  • Operating Voltage (Mains, P-N)- 180V - 300V (310-520V L-L)
  • Operating Voltage (Gen, P-N)- 170V - 250V
  • Electrical Endurance- 60,000 operations
  • Short-Circuit Withstand Capacity- 6kA
  • Switching Time- 1 second
  • Self-Resetting Time- 4 - 10 seconds
  • Ambient Temperature- -10°C to 65°C
  • Enclosure Protection- IP20
  • Compliance- IEC 60947-4 / IEC 60947-6-1

Where Are They Used?

Metering ACCLs are primarily used in residential as well as commercial buildings to maintain the power distribution on track. They easily switch between the mains and generator thus preventing the excess power supply to avoid damage. These devices also track energy use to help with cost control and efficient power management.

Factors to Consider While Selecting Metering ACCL

  • Load Handling Capacity- Choose based on the expected power demand, such as 40A for small setups or 100A for larger industries.
  • Energy Monitoring Features- Select models with a display screen and remote monitoring support for better control.
  • Transition Speed- Look for an ACCL that can switch power in under a second to avoid downtime.
  • Safety and Compliance- Make sure the device meets industry standards for protection against overload and faults.

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