Product

3SB71-63, 16000 A & 10000 A

Independent power supply with build-in power source,directly draws power from the incoming end to avoid the risk of protection function failure caused by external power supply failure.

● Overload protection
● Short circuit protection
● Isolation
● Controlling
● Used in residential building, non-residential building, industry, energy and infrastructure

Functions

● Overload protection

● Short circuit protection

● Isolation

● Controlling

● Used in residential building, non-residential building, industry, energy and infrastructure

Technical specifications

● Standards: IEC 60898-1, IEC 60947-2

● Rated current In (A) : 2, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63

● Rated voltage Un (V AC): 230/400

● Operational voltage (V AC): Min. 2; Max. 250/440

● Rated frequency (Hz): 50/60

● Rated insulation voltage (V AC): 500

● Number of poles: 1, 2, 3, 4

Tripping characteristic	IEC 60898-1	IEC 60947-2
Characteristic B (In)	3-5	4
Characteristic C (In)	5-10	8
Characteristic D (In)	10-20	12

● Thermal operating limit (In): 1.13 - 1.45

● Rated switching capacity Icn (kA): 10

● Degree of protection: IP20, with connected conductors

● Electrical life (times): 10,000

● Mechanical life (times): 20,000

● Breaking capacity:

Model	Rated voltage(V)		Acc. to IEC 60898-1		Acc. to IEC 60947-2
Model	Rated voltage(V)		Icn(kA)	Ics(kA)	Icu(kA)	Ics(kA)
3SB71-63	1P	230/400	16	12	15	7.5
3SB71-63	2-4P	400	16	12	15	7.5
3SB71-63H	1P	230/400	10	7.5	10	7.5
3SB71-63H	2-4P	400	10	7.5	10	7.5

● Mounting position: Any

● Conductor cross-sections

● Solid and stranded (mm²): 0.75-35

● Finely stranded with end sleeve (mm²): 0.75-25

● Terminal tightening torque (N·m): 2.8

● Ambient temperature (°C): -25 ~ +45, max. 95 % humidity

● Storage temperature (°C): -40 ~ +75

● Altitude (meters): Max 2,000

References

● Additional components: page 189 ~ 191

Instruction of type code

Features

● The handle being sealable or equipped with padlock bracket avoids dangerous operation changes (ON / OFF)

● The handle provides a clear indication of the contact position

● Adequate printing of all data on the front provides long-term identification

● Energy limiting class: 3

● The emission of ionized gases is limited to the severest restrictions: 45 mm grid distance

● This MCB for household in accordance with: IEC 60898 -1, B, C and D tripping characteristics

● This MCB for industry in accordance with IEC 60947-2 instantaneous tripping characteristics with release B: 4 In, release C: 8 In, release D: 12 In

● This MCB may be extended with:

● A wide range of RCDs

● Full sets of accessories

Add-on devices

Benefits

● Attractive device design

● Easily recognizable, color-coded switching position

● Indication integrated in the handle

Selection and ordering data

IEC 60898-1 16 kA

IEC 60947-2 15 kA

Selection and ordering data

IEC 60898-1 10 kA

IEC 60947-2 10 kA

Tripping characteristic curves

Selectivity

Load side: 3SB71-63,Characteristic B, C

Rated current In (A)	Power supply side: RT16-00 (fuse)
	20	25	36	50	63	80	100	125	160
	Is(kA)
≤ 2	1.2	4	12	12	12	12	12	12	12
3	0.7	1.2	3.8	5.3	6	6	6	6	6
4	0.6	0.9	2.5	3.8	6	6	6	6	6
6	0.5	0.8	1.9	2.5	4.5	5	6	6	6
10		0.7	1.4	2.2	3.2	3.6	6	6	6
16			1.2	1.8	2.6	3	5.6	6	6
20				1.5	2.2	2.5	4.6	6	6
25				1.3	2	2.2	4.1	5.5	6
32					1.7	1.9	3.8	4.5	6
40						1.7	3	4	5
50						1.5	2.6	3.5	4.5
63							2.4	3.3	4.5

Load side: 3SB71-63,Characteristic B, C

Rated current In (A)	Power supply side: 3SM29-125
	16	20	25	32	40	50	63	80	100
	Is(kA)
≤ 10	0.19	0.019	0.3	0.4	0.5	0.5	0.5	0.63	0.8
16			0.3	0.4	0.5	0.5	0.5	0.63	0.8
20					0.5	0.5	0.5	0.63	0.8
25						0.5	0.5	0.63	0.8
32						0.5	0.5	0.63	0.8
40
50
63

Back up protection

Load side: 3SB71-63,Characteristic B, C

Rated current In (A)	Power supply side: RT16 series
	40	50	63	80	100	125	160
	Is(kA)
1~6	40	40	40	40	40	40	40
8~10	40	40	40	40	40	40	40
13	40	40	40	40	35	35	35
16	40	40	40	40	30	30	30
20	40	40	40	40	30	30	30
25	40	40	40	40	30	30	30
32	40	40	40	40	30	30	30
40	40	40	40	40	30	30	30
50	30	30	30	30	30	30	30
63	20	20	20	20	15	15	15

Load side: 3SB71-63,Characteristic B, C

Rated current In (A)	Power supply side: 3SM29
	3SM29-125S	3SM29-125H	3SM29-125R	3SM29-250S	3SM29-250H	3SM29-250R
	Is(kA)
1~6	15	18	18	15	15	15
10~20	12	15	15	12	12	12
32~40	12	15	15	12	12	12
50~60	12	15	15	12	12	12

Temperature derating

The maximum permissible current in a circuit breaker depends on the ambient temperature where the circuit breaker is placed.

Ambient temperature is the temperature inside the enclosure or switchboard in which the circuit breakers are installed.

The reference temperature is 30 ºC

Ambient temperature Rated current (A)	-35 ºC	-30 ºC	-20 ºC	-10 ºC	0 ºC	10 ºC	20 ºC	30 ºC	40 ºC	50 ºC	60 ºC
2	2.60	2.52	2.46	2.38	2.28	2.20	2.08	2.00	1.92	1.86	1.76
4	5.20	2.04	4.92	4.76	4.56	4.40	4.16	4.00	3.84	3.76	3.52
6	7.80	7.56	7.38	7.14	6.84	6.60	6.24	6.00	5.76	5.64	5.28
10	13.20	12.70	2.50	12.00	11.50	11.10	10.60	10.00	9.60	9.30	8.90
16	21.12	20.48	20.00	19.20	18.40	17.76	16.96	16.00	15.36	4.88	14.24
20	26.40	25.60	25.00	24.00	23.00	22.20	21.20	20.00	19.20	8.60	17.80
25	33.00	32.00	31.25	30.00	28.75	27.75	26.50	25.00	24.00	23.25	22.25
32	42.56	41.28	40.00	38.72	37.12	35.52	33.92	32.00	30.72	29.76	28.16
40	53.20	51.20	50.00	48.00	46.40	44.80	42.40	40.00	38.40	37.20	35.60
50	67.00	65.50	63.00	60.50	58.00	56.00	53.00	50.00	48.00	46.50	44.00
63	83.79	81.90	80.01	76.86	73.71	70.56	66.78	63.00	60.48	58.90	55.44

When several simultaneously operating circuit breakers are mounted side by side in a small enclosure, the temperature rise inside the enclosure causes a reduction in current rating. you must then assign the rating (already derated if necessary according to ambient temperature) a downrating factor of 0.8.

Outline and installation dimensions