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SOURCE ISOLATION SWITCH, 3 PHASE, 1000 A, 240V, Type 4/12/3R

SIS-3-1000-240

The Meter-Rite Source Isolation Switch is RONK's next step into renewable energy solutions, designed to provide a reliable and compliant method of isolating a power source from a Battery Energy Storage System (BESS). With support for both single phase and three phase configurations and a wide current range of 100A to 1200A, this switch offers the flexibility needed for residential, commercial, and utility-scale applications.

Built with safety at the forefront, the Source Isolation Switch integrates a UL489 Molded Case Circuit Breaker (MCCB) and carries UL508A certification, ensuring dependable protection and simplified approval across multiple installations. Its NEMA 4/12 outdoor-rated enclosure (type 4x also available) provides rugged durability in demanding environments, while full G99/1 and G98/1 compliance supports seamless integration with international renewable energy standards.

Engineered for Battery Energy Storage Systems, renewable energy projects, microgrids, and utility interconnections, the Meter-Rite Source Isolation Switch provides the positive isolation required to ensure safe maintenance, reliable grid compatibility, and long-term system performance. Backed by more than 75 years of proven RONK reliability, it represents a powerful and trusted solution for today's evolving energy landscape.

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Part Numbers:

  • SIS-1-100-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 100 A, 240V, Type 4/12/3R
  • SIS-1-200-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 200 A, 240V, Type 4/12/3R
  • SIS-1-250-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 250 A, 240V, Type 4/12/3R
  • SIS-1-400-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 400 A, 240V, Type 4/12/3R
  • SIS-1-600-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 600 A, 240V, Type 4/12/3R
  • SIS-1-800-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 800 A, 240V, Type 4/12/3R
  • SIS-1-1000-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 1000 A, 240V, Type 4/12/3R
  • SIS-1-1200-240 - SOURCE ISOLATION SWITCH, 1 PHASE, 1200 A, 240V, Type 4/12/3R
  • SIS-3-100-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 100 A, 240V, Type 4/12/3R
  • SIS-3-200-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 200 A, 240V, Type 4/12/3R
  • SIS-3-250-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 250 A, 240V, Type 4/12/3R
  • SIS-3-400-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 400 A, 240V, Type 4/12/3R
  • SIS-3-600-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 600 A, 240V, Type 4/12/3R
  • SIS-3-800-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 800 A, 240V, Type 4/12/3R
  • SIS-3-1000-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 1000 A, 240V, Type 4/12/3R
  • SIS-3-1200-240 - SOURCE ISOLATION SWITCH, 3 PHASE, 1200 A, 240V, Type 4/12/3R
  • SIS-3-100-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 100 A, 480V, Type 4/12/3R
  • SIS-3-200-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 200 A, 480V, Type 4/12/3R
  • SIS-3-250-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 250 A, 480V, Type 4/12/3R
  • SIS-3-400-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 400 A, 480V, Type 4/12/3R
  • SIS-3-600-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 600 A, 480V, Type 4/12/3R
  • SIS-3-800-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 800 A, 480V, Type 4/12/3R
  • SIS-3-1000-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 1000 A, 480V, Type 4/12/3R
  • SIS-3-1200-480 - SOURCE ISOLATION SWITCH, 3 PHASE, 1200 A, 480V, Type 4/12/3R

Amperage Rating: 100-1200A

Voltage: 240V/480V (1 and 3 Phase)

Short Circuit Rating: Per UL489 MCCB ratings

Mounting: Wall Mounted

Enclosure: NEMA 4/12 (Type 4x also available)

UL508A & UL489 MCCB Listed: Built to meet stringent U.S. safety standards.

G99/1 & G98/1 Compliance: Grid-ready for international renewable energy installations.

Positive Isolation for BESS Applications: Provides safe, reliable separation between the grid and battery energy storage systems.

Compliance: Meets NEC & IEC isolation requirements.

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The reliability and safety of electrical systems have never been more crucial. RONK's American-designed and assembled products are durable, efficient, and built to last for decades.

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