What is the difference between a three-pole and a two-pole circuit breaker?

3-pole circuit breakers are suitable for three-phase supplies, while the 2-pole circuit breaker is ideal for single-phase AC circuits.

Can we connect two wires to one breaker?

Yes, if both wires are rated for an amperage equal to or greater than the breaker's handle rating.

Eaton C-Series moulded case circuit breaker trip units open the circuit in the event of a thermal overload, short circuit or ground fault.

Filter

Style	Model	MPN	Price
A	F0S05CX	F0S05CX	€1,751.15
B	HM2R16	HM2R16	€469.67
C	JT3125TG	JT3125TG	€1,910.66
D	LEG3500T	LEG3500T	€3,175.90
D	LEM3350T	LEM3350T	€4,169.78
D	LEM3400T	LEM3400T	€4,169.78
D	LEM3600T	LEM3600T	€5,815.79
D	LEM3600TM2	LEM3600TM2	€5,470.60	RFQ
E	LEP3400T52	LEP3400T52	€14,669.25
E	LES3600HMCP	LES3600HMCP	€8,234.96
F	LES3600LSG	LES3600LSG	-	RFQ
F	LES3600LSIG	LES3600LSIG	-	RFQ
F	LES3630LSG	LES3630LSG	€23,269.10
E	LES4600LSV3	LES4600LSV3	€10,369.32
G	LT4500T	LT4500T	€10,378.49
G	LT7500FA	LT7500FA	€9,896.24
G	LT8320AA	LT8320AA	€9,896.24
G	LT9320AA	LT9320AA	€9,896.24
G	LT9500AA	LT9500AA	€9,896.24
G	LT9630AA	LT9630AA	€9,896.24
H	LT360032	LT360032	€4,790.62
I	LTF3630T	LTF3630T	€7,415.30
J	MEM3800T2	MEM3800T2	€6,584.09	RFQ
K	MES3800LSG	MES3800LSG	€19,196.26
L	MT2350T	MT2350T	€7,030.25
L	MT2700TV	MT2700TV	€7,030.25
L	MT2800TV	MT2800TV	€7,030.25
M	MT3350TV	MT3350TV	€8,596.19
M	MT3400TV	MT3400TV	€8,596.19
M	MT3450TV	MT3450TV	€8,596.19
N	MT3500T	MT3500T	€2,675.87
N	MT3600T	MT3600T	€2,675.87
N	MT3800T	MT3800T	€2,675.87

Eaton circuit breaker trip units have two / three / four-pole configurations to interrupt up to 3 phases and the neutral phase.
They have thermal magnetic / electronic sensor to detect overloading conditions.
These units protect capacitor banks, welding machines, motors and generators.