It is a Miniature Circuit Breaker. It is a current operated device. It protects against overloadand short circuit fault in electrical supply. The over load protection is achieved with thermaltripping mechanism and short circuit protection is achieved by Magnetic trippingmechanism.
01
The thermal Operation provides protection from moderate overload. Under overload condition, athermo-metallic element ( Bimetallic strip) deflects and it operates a latching mechanism allowingthe main contacts to open.
02
In magnetic operation, large overloads or short circuit current actuates a solenoid causing aplunger to strike the latching mechanism rapidly opening the main contacts.
Specifications : IS/IEC 60898-1:2002
Number of Poles : 1, 1+N, 2,3, 3+N &4
Tripping Chara. & Rated Currents (In) : B Curve – 6 – 40 Amp.
: C Curve – 6 – 63 Amp.
Rated Breaking Capacity (lm) : 10000A
Energy Limiting Class : Class 3 as per EN 60898
Rated Voltage (Ue) : Single Pole – 240/415 VAC
: Multi Pole – 415 VAC
Insulation Voltage (Ui) : 660V
Rated Frequencies : 50/60 Hz
Impulse Withstand Voltage (U imp) : 4 KV (1.2/ 50p)
Impulse Power Frequency Voltage : 2 KV (50 Hz)
Housing Material : Polybutylene Terephthalate in Grey Colour.
Degree of Protection : P20 as per IS/IEC 60898-1
Mounting Position : Any position
Mounting : Quick snap to mounting rail – 35 mm
Connecting Terminals : Combination box terminals on incoming and outgoing sides. Suitable
. for Multi core, stranded and flexible conductors up to 35 sq mm.
Electrical Service Life : Min. 20,000 make / break operations
Ambient Temperature : Tmax 55°C & Tmin. -25°C
Impact Resistance : 3g, At least 2 impacts duration 13 ms
ISOLATOR
Specifications : IS13947 Part 3 / IEC 60947-3, 1999
Number of poles : DP, TP & FP
Utilization Category : AC 22A
Rated Voltage : 240/415 VAC
Rated Current : 40 to 63 Amp.
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