● 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
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
Tripping Characteristic curves
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
English
