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Rapid Shutdown Devices

NEC 690.12 requires that a rooftop solar array can be brought to a safe voltage quickly so firefighters are not working over energized DC conductors. Rapid shutdown devices are how that requirement is met, and on most rooftop installs they are not optional.

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Tigo TS4-A-S - Monitoring and Rapid Shutdown - 20A - 700W - Tigo TS4-A-S optimizer with wiring and MC4 connectors, Monitoring & Rapid
$39.47 - $39.47
$39.47
$39.47 - $39.47
$39.47

Tigo TS4-A-S - Monitoring and Rapid Shutdown - 20A - 700W

Tigo Energy

The Tigo TS4-A-S - Monitoring and Rapid Shutdown - 20A - 700W is a monitoring and communication device from Tigo Energy — Model TS4-A-S; Functions ...

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$39.47 - $39.47
$39.47
$39.47 - $39.47
$39.47
Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 20 Pack - Tigo solar optimization bundle featuring twenty TS4-A-O 725W module-level power optimizers, one Cloud Connect Advanced (CCA), one Tigo Access Point (TAP), outdoor-rated
$1,526.03 - $1,526.03
$1,526.03
$1,526.03 - $1,526.03
$1,526.03

Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 20 Pack

Tigo Energy

The Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 20 Pack is a monitoring and communication device from Tigo Energy — Opti...

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$1,526.03 - $1,526.03
$1,526.03
$1,526.03 - $1,526.03
$1,526.03
Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 10 Pack - Tigo solar optimization bundle featuring ten TS4-A-O 725W module-level power optimizers, one Cloud Connect Advanced (CCA), one Tigo Access Point (TAP), outdoor-rated enc
$946.53 - $946.53
$946.53
$946.53 - $946.53
$946.53

Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 10 Pack

Tigo Energy

The Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 10 Pack is a monitoring and communication device from Tigo Energy — Opti...

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$946.53 - $946.53
$946.53
$946.53 - $946.53
$946.53
Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 5 Pack - Tigo solar optimization bundle featuring five TS4-A-O 725W module-level power optimizers, one Cloud Connect Advanced (CCA), one Tigo Access Point (TAP), outdoor-rated enc
$656.78 - $656.78
$656.78
$656.78 - $656.78
$656.78

Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 5 Pack

Tigo Energy

The Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - 5 Pack is a monitoring and communication device from Tigo Energy — Optim...

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$656.78 - $656.78
$656.78
$656.78 - $656.78
$656.78
Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown - 22A (Isc) 725W 1500V UL/1000V IEC - Front view of Tigo TS4-A-O Optimizer
$55.84 - $55.84
$55.84
$55.84 - $55.84
$55.84

Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown - 22A (Isc) 725W 1500V UL/1000V IEC

Tigo Energy

The Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown - 22A (Isc) 725W 1500V UL/1000V IEC is a monitoring and communication device from Tig...

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$55.84 - $55.84
$55.84
$55.84 - $55.84
$55.84
Tigo TS4-A-2F - 2 Module Rapid Shutdown - Tigo TS4-A-2F Rapid Shutdown Dual Module black coiled wires front view
$53.04 - $53.04
$53.04
$53.04 - $53.04
$53.04

Tigo TS4-A-2F - 2 Module Rapid Shutdown

Tigo Energy

The Tigo TS4-A-2F - 2 Module Rapid Shutdown is a solar balance-of-system part from Tigo Energy — Supported 2; Maximum Input Voltage 80V per input.W...

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$53.04 - $53.04
$53.04
$53.04 - $53.04
$53.04
Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable - Tigo TS4-A-O solar module optimizer with monitoring and rapid shutdown, 22A Isc, 725W, 1500V UL/1000V IEC, MC4 connectors, 0.6m and 1.2m cable options
$57.95 - $57.95
$57.95
$57.95 - $57.95
$57.95

Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable

Tigo Energy

The Tigo TS4-A-O - Optimization Monitoring and Rapid Shutdown Long Cable is a monitoring and communication device from Tigo Energy — TS4 Conductor ...

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$57.95 - $57.95
$57.95
$57.95 - $57.95
$57.95
Tigo TS4-A-F - Rapid Shutdown - 22A - Tigo TS4-A-F rapid shutdown device with MC4 connectors and integrated module-level safety electronics.
Tigo TS4-A-F rapid shutdown module with connector leads
$35.31 - $35.31
$35.31
$35.31 - $35.31
$35.31

Tigo TS4-A-F - Rapid Shutdown - 22A

Tigo Energy

The Tigo TS4-A-F - Rapid Shutdown - 22A is a solar balance-of-system part from Tigo Energy — System Type Module-level rapid shutdown device; NEC Co...

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$35.31 - $35.31
$35.31
$35.31 - $35.31
$35.31
Tigo RSS Transmitter - Pure Signal Single Core (No Enclosure) - Din Rail Mount - Tigo RSS Transmitter - Pure Signal Single Core facing right
Tigo RSS Transmitter - Pure Signal Single Core (No Enclosure) - Din Rail Mount - Tigo RSS Transmitter - Pure Signal Single Core (No Enclosure) | Din Rail Mount
$52.71 - $52.71
$52.71
$52.71 - $52.71
$52.71

Tigo RSS Transmitter - Pure Signal Single Core (No Enclosure) - Din Rail Mount

Tigo Energy

The Tigo RSS Transmitter - Pure Signal Single Core (No Enclosure) - Din Rail Mount is a monitoring and communication device from Tigo Energy, stock...

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$52.71 - $52.71
$52.71
$52.71 - $52.71
$52.71
Tigo TS4-A-2F - Long Cable - 15A - TS4-A-2F dual module optimizer with integrated MC4 connectors and extended cable leads for solar panel installation.
$57.29 - $57.29
$57.29
$57.29 - $57.29
$57.29

Tigo TS4-A-2F - Long Cable - 15A

Tigo Energy

The Tigo TS4-A-2F - Long Cable - 15A is a PV cable and connector component from Tigo Energy — Built for Safety Fully meets NEC 2017/2020 rapid shut...

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$57.29 - $57.29
$57.29
$57.29 - $57.29
$57.29
Tigo RSS Transmitter - Pure Signal Dual Core (No Enclosure) - Din Rail Mount - Tigo RSS Transmitter - Pure Signal Dual Core facing right
Tigo RSS Transmitter - Pure Signal Dual Core (No Enclosure) - Din Rail Mount - Tigo RSS Transmitter - Pure Signal Dual Core angled left
$60.75 - $60.75
$60.75
$60.75 - $60.75
$60.75

Tigo RSS Transmitter - Pure Signal Dual Core (No Enclosure) - Din Rail Mount

Tigo Energy

The Tigo RSS Transmitter - Pure Signal Dual Core (No Enclosure) - Din Rail Mount is a monitoring and communication device from Tigo Energy, stocked...

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$60.75 - $60.75
$60.75
$60.75 - $60.75
$60.75
Solis S6 7.6kW Single Phase High Voltage Energy Storage Hybrid Inverter - S6-EH1P7.6K-H-US-RSS-RGM - right turn 3/4 view of Solis 7.6kW Hybrid Inverter
Solis S6 7.6kW Single Phase High Voltage Energy Storage Hybrid Inverter - S6-EH1P7.6K-H-US-RSS-RGM - Front face view of Solis 7.6kW Hybrid Inverter
$3,023.99 - $3,023.99
$3,023.99
$3,023.99 - $3,023.99
$3,023.99

Solis S6 7.6kW Single Phase High Voltage Energy Storage Hybrid Inverter - S6-EH1P7.6K-H-US-RSS-RGM

Solis

The Solis S6-EH1P7.6K-H-US-RSS-RGM is a 7.6kW single-phase high-voltage hybrid inverter that supports up to 150kWh of battery per inverter — an unu...

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$3,023.99 - $3,023.99
$3,023.99
$3,023.99 - $3,023.99
$3,023.99

How to Choose

The code sets the outcome, not the product. Module-level electronics — a TS4 cover, a microinverter, or an optimizer with integrated shutdown — bring conductors inside the array boundary to safe voltage on command. You also need an initiator: a labeled, accessible switch that triggers shutdown, usually at the service entrance. Microinverter arrays satisfy the requirement inherently because there is no high-voltage DC on the roof to begin with. Verify the specific device is certified to the SunSpec standard your inverter expects, because a mismatch means the shutdown signal never arrives.

Key Specifications Explained

  • Code basis: NEC 690.12; adoption and edition vary by jurisdiction
  • Module-level devices: TS4 covers, optimizers and microinverters
  • Initiator: Accessible labeled switch, typically at the service disconnect
  • Signaling: SunSpec-certified communication between transmitter and devices
  • Labeling: Permanent placard at the shutdown point is part of compliance

Brands We Carry

Tigo Energy, Enphase Energy, APsystems and inverter-integrated transmitters from Growatt and Solis.

Frequently Asked Questions

Do microinverters need separate rapid shutdown?

No. Microinverters convert to AC at the module, so there is no high-voltage rooftop DC. They satisfy 690.12 inherently.

Does 690.12 apply to ground mounts?

Generally not — the requirement targets conductors on or in buildings. Confirm with your AHJ, since local amendments vary.

What happens if I skip it?

The install fails inspection and cannot be legally interconnected. It is also a real safety issue for anyone who has to work on the roof.

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