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3SB66, 1P+N in 1 modular width

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
Availability:

Functions

●   Overload protection

●   Short circuit protection

●   Isolation both for phase and neutral line

●   Controlling

●   Used for the protection of plants with switched neutral

●   Used in residential building


Technical specifications

●   Standard: IEC 60898-1

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

●   Rated voltage Un (V AC): 230

●   Rated frequency (Hz): 50/60

●   Operational voltage Min / Max (V AC): 24 / 250

●   Number of pole: 1P+N (1 modular width)

●   Tripping characteristic: B, C

●   Characteristic B (In): 3-5

●   Characteristic C (In): 5-10

●   Thermal operating limit : 1.13-1.45 In

●   Rated switching capacity Icn (kA): 6

●   Degree of protection: IP20, with connected conductors

●   Electrical life(times): 4,000

●   Mechanical life (times): 10,000

●   Breaking capacity:

Model Rated voltage(V) Acc. to IEC 60898-1
Icu(kA) Ics(kA)
3SB66 1P+N 230 6 6

●   Mounting position: Any

●   Conductor cross-sections

●   Solid and stranded (mm²): 0.75-16

●   Finely stranded with end sleeve (mm²): 0.75-16

●   Terminal tightening torque (N·m): 2.0

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

●   Storage temperature (°C): -40 ~ +75

●   Altitude (meters): Max. 2,000

●   Aonnection capacity (mm²): 1-16


References

●   Additional components: page 189 ~ 191


Instruction of Type Code

3SB66.1


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 tripping characteristics

●   Full sets of accessories


Selection and ordering data

IEC 60898-2 10 kA

3SB66.2


Tripping Characteristic curves

3SB66.3


Magnetic release

An electromagnet with plunger ensures?instantaneous tripping in case of short circuit. The?IEC 60898-1 distinguishes three different types,? following the current for instantaneous release: type?B, C

B

Test current

Tripping time

Applications
3 In

0.1 < t < 45 s (In ≤ 32 A) 

0.1 < t < 90 s (In > 32 A)

Only for resistive loads such as: 

- electrical heating - water heater - stoves

5 In t < 0.1 s
C 5 In

0.1 < t < 15 s (In ≤ 32 A)

0.1 < t < 30 s (In > 32 A)

Usual loads such as: 

- lighting - socket outlets - small motors

10 In t < 0.1 s


Thermal release

●   The release is initiated by a bimetal strip in case of overload

●   The standard defines the range of release for specific overload values

●   Reference ambient temperature is 30 ºC

Test current

Tripping time

1.13 In t ≥ 1 h (In ≤ 63 A)
1.45 In t < 1 h (In ≤ 63 A)
2.55 In

1s < t < 60 s (In ≤ 32 A)

1s < t < 120 s (In > 32 A)


Outline and Installation Dimensions

3SB66.4


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