This is a 90 Amp AC breaker built for the EG4 BSB Series distribution setup used with FlexBoss inverters. It protects your AC output circuit from overcurrent conditions, and it's the right choice if your FlexBoss install calls for a 90A breaker in the BSB enclosure.
An AC breaker is a small part with a large job: it's the last line of defense between your inverter's AC output and a fault condition that could otherwise cascade into wiring damage or a fire hazard. The EG4 BSB Series breaker is matched to the FlexBoss inverter's distribution architecture, so amperage rating and physical fit line up with what the system expects. 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.
- Ampacity: 90 Amp rating for the AC circuit position in the BSB Series enclosure.
- Series: EG4 BSB Series breaker, matched for use with FlexBoss inverters.
- Not verified for other amperage slots: This listing covers the 90A position only. Do not substitute into circuits requiring a different breaker rating.
- Not confirmed for non-FlexBoss systems: Manufacturer data provided does not confirm fitment with other EG4 inverter models or third-party brands. Treat as FlexBoss/BSB-specific unless verified otherwise.
- Manufacturer-specified 90A rating for the BSB Series position — not a generic aftermarket substitute.
- Purpose-built for direct compatibility with EG4 FlexBoss distribution hardware.
- Standard breaker form factor sized for the BSB enclosure slot.
- Single-part replacement — no need to swap the full distribution block for one failed breaker.
| Spec | Value | Unit |
|---|---|---|
| Ampacity | 90 | A |
| Series | BSB | — |
| Compatible Inverter | FlexBoss | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
- Fits: EG4 FlexBoss inverter systems using the BSB Series distribution enclosure, at the 90A breaker position.
- Does NOT fit: Non-FlexBoss EG4 inverter models or other manufacturers' distribution enclosures — fitment not confirmed by manufacturer data provided.
- Does NOT fit: Circuit positions requiring a breaker rating other than 90A.
| Compliance Item | Value |
|---|---|
| UL Listing | [NEEDS VERIFICATION] |
| NEC Ampacity Reference | Confirm circuit load against 90A rating using NEC ampacity tables prior to install |
| IP Rating | [NEEDS VERIFICATION] |
FAQ
What amperage is this breaker rated for?
This breaker is rated for 90 Amps, per the EG4 BSB Series lineup.
What inverter system is this breaker designed for?
It is designed for the EG4 FlexBoss inverter as part of the BSB Series distribution setup.
Is this an AC or DC breaker?
This is an AC breaker. Manufacturer data provided does not include DC breaker ratings for this part number.
Will this fit other EG4 inverter models besides FlexBoss?
The manufacturer data provided ties this breaker specifically to the BSB Series for FlexBoss. Fitment with other EG4 inverter families is [NEEDS VERIFICATION].
Warranty & Registration: Manufacturer warranty terms for this breaker are [NEEDS VERIFICATION]. Please refer to the "Resources (System Manuals and Warranty)" Tab above on this page for full warranty documentation and registration steps. If you have questions before ordering, ask us — we always reply back.
