EG4 | 70A | BSB Series AC Breaker | EG4BREAKER70A | For EG4 18kPV Inverter

This is a 70 amp AC breaker built for the EG4 18kPV hybrid inverter system. If you're servicing, replacing, or building out an 18kPV install, this breaker is the OEM-matched part for the BSB series distribution setup.

Breakers in an ESS distribution panel are the first line of defense against overcurrent conditions on the AC side of your inverter. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.

• Rated for 70 amps, BSB series breaker
• Designed for the EG4 18kPV inverter's AC distribution wiring
• NOT confirmed for use with EG4 6000XP, FlexBOSS21, or other EG4 inverter models [NEEDS VERIFICATION]
• NOT rated to exceed its 70A continuous draw limit — exceeding this rating risks nuisance tripping or thermal damage to downstream conductors

• Sized specifically for the EG4 18kPV inverter's AC output requirements
• Part of the BSB breaker series used across EG4 distribution hardware
• Straightforward drop-in replacement for existing 18kPV AC breaker positions
• Supports field service and replacement without requiring a full panel swap

Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.

• Fits: EG4 18kPV Hybrid Inverter (BSB series AC breaker position)
• Does NOT fit: EG4 6000XP, FlexBOSS21, or other EG4 inverter families outside the 18kPV [NEEDS VERIFICATION]
• Does NOT exceed: 70A continuous rating — do not substitute a higher-amp breaker without verifying downstream wire ampacity

FAQ

What amperage is this breaker rated for?
This is a 70 amp AC breaker in the BSB series, designed for use with the EG4 18kPV inverter.

Will this breaker work with other EG4 inverters besides the 18kPV?
Compatibility outside the EG4 18kPV inverter system is not confirmed in manufacturer data. Confirm fitment with your installer or MSSD before ordering for another model.

Is this an AC breaker or a DC breaker?
This is an AC breaker, intended for the AC side of the 18kPV inverter's distribution wiring.

Does this breaker come with a warranty?
Warranty terms specific to this individual breaker component are not stated in the manufacturer data provided. Refer to the 'Resources (System Manuals and Warranty)' Tab above for details on the 18kPV system warranty.

Warranty & Registration

Specific warranty terms for this individual breaker (EG4BREAKER70A) are not detailed in the manufacturer data provided. For full warranty documentation covering the EG4 18kPV inverter system, refer to the "Resources (System Manuals and Warranty)" Tab above on this page. Contact MSSD if you need help locating registration steps — we always reply back.