Can this be used as a substitute for a general electric thqb2120gf? will it fit the same box as the ge breaker?

No, The code requires you to use the same breakers as your panel. GE you use GE or breakers that are certified for that panel.

Will the qf220a be a direct replacement for the qf220?

both are 20 amp breakers, both are 140/220v

Will this fit in a murry panel?

breakers and panel manufacturer have to match. do not mix and match

The manufacturer of my mini split specifies a “high harmonic” gfci breaker. is this a high harmonic breaker?

I'm not sure if it is but I've used this breaker on several hot tubs that required High harmonic GFCI Breakers and havnt had any issues. Just to make sure I would contact Siemens directly and ask.

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Siemens QF220A QF220 Ground Fault Circuit Interrupter, 20 Amp, 2 Pole, 120 Volt, 10,000 AIC, Color

Product ID: 273760145

Details

Brand
SIEMENS
Circuit breaker type
GFCI
Current rating
20 Amps
Mounting type
Plug-In Mount
Product dimensions
5.1D x 7.6W x

⚡20 Amp dual-pole power

🔒Self-test & lockout safety

🛡️10,000 AIC interrupt rating

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Sold byAmazon MongoliaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Stay protected, stay ahead — the breaker that never sleeps.

POWERFUL DUAL POLE DESIGN - 20 Amp, 2-pole configuration delivers reliable, balanced power for critical circuits.
UNMATCHED SAFETY ASSURANCE - Automatic self-testing ensures your home is protected 24/7 without lifting a finger.
VERSATILE APPLICATION READY - Perfect for spas, kitchens, bathrooms, and any space demanding top-tier GFCI protection.
EFFORTLESS COMPLIANCE MAINTENANCE - UL 943 certified with monthly self-test eliminates guesswork and costly service calls.
INDUSTRY LEADING INTERRUPT CAPACITY - 10,000 AIC rating means superior fault interruption for peace of mind.

The Siemens QF220A is a 20 Amp, 2-pole Ground Fault Circuit Interrupter with a robust 10,000 AIC interrupt rating. Featuring an innovative self-test and lockout mechanism compliant with UL 943, it continuously monitors its own functionality to guarantee maximum safety. Ideal for high-risk environments like spas and kitchens, this plug-in mount breaker offers reliable, maintenance-free protection that professionals trust.

Specifications

ASIN	B01HQGLX06
Brand	SIEMENS
Circuit Breaker Type	GFCI
Current Rating	20 Amps
Customer Reviews	4.7 4.7 out of 5 stars (616)
Global Trade Identification Number	00887621216665
Included Components	One Ground Fault Circuit Interrupter
Item Dimensions D x W x H	5.1D x 7.6W x 17.8H centimetres
Item Type Name	Siemens Ground Fault Circuit Interrupter, 20 Amp, 2 Pole, 120 Volt, 10,000 AIC
Manufacturer	Siemens
Manufacturer Part Number	QF220A
Model Number	QF220A
Mounting Type	Plug-In Mount
Number of Poles	2
UPC	887621216665
Unit Count	1.0 count
Voltage	120 Volts

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