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What overcurrent protection is required on the SDSA 3-Phase Surge Protection devices?

What overcurrent protection to use on the SDSA 3-Phase Surge Protection devices?
Product Line:
Surge Protection Devices, SPD  

SDSA, 3ph
Breaker specification to protect equipment
The SDSA 3-Phase come with #12 wire.  You can connect it three different ways. 
1) You can connect to a existing breaker (20A or less) feeding another load if lug terminals will accommodate multiple conductors.  
2) You can connect to a dedicated 20A 3 pole breaker.
3)  You can direct bus connect because it is a Type 1 device. Type 1 SPD can be connected with or without an overcurrent protection device. 

To reach a Surge Protection Specialist direct please call 800-577-7353 or email:      
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