Breakers listed for double tap (two wires on one lug)

[brycenesbitt]

Not finding a handy reference in google, I'll make one. Here's a list of breakers
supporting double-tap or double-lug, as listed. Here the Eaton/Moller FAZ series. Just torque it a bit more and for each slot two wires are G2G.

Breaker series: Eaton Moller FAZ-NA
Wire gauges: #10 to #18 (for 32 amp)
Stranded: not specified
Must be same size: not specified
Specifications UL489: https://www.eaton.com/content/dam/e...it-breakers/FAZ-product-guide-pg01101009e.pdf

 

[infinity]

I don't think that you'll see one of those on a home inspection.

 

[brycenesbitt]

Breaker series: Square D QO, QOB, QO-VH, QOB-VH
Wire gauges: #14 to #10 (for 10 to 30 amps)
Stranded: not specified
Must be same size: not specified
Backing data: https://iportal2.schneider-electric...NIATURE CIRCUIT BREAKER_DATASHEET_CATALOG.PDF 0730CT9801R1/08 © 1998–2008 Schneider Electric All Rights Reserved Replaces 0730CT9801

 

[infinity]

The CB in the OP is a Eaton miniature supplementary protector. It cannot be used as the sole branch circuit protection that why I said you won't see it in a dwelling.

The Eaton FAZ supplementary protectors are used to provide overcurrent protection where branch protection (for example, UL 489 MCCB) is already provided or not required. The units can be installed as a component within, or as a part of an appliance or a piece of electrical equipment.

https://cdn.automationdirect.com/static/specs/eatonfaz.pdf