MCB and HRC Fuse Testing System Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12976
Indian Lab Suppliers supplies the MCB and HRC Fuse Testing System (Product ID: 12976) as part of its electronics engineering lab equipment range. It is a panel for measuring the current-time tripping behaviour and temperature rise of MCBs and an HRC fuse.
Quick Answer
The set holds a 6 A B-type MCB, a 2 A C-type MCB and a 6 A HRC (high rupturing capacity) fuse, with the MCBs in transparent cases so the bimetal and trip mechanism can be seen. Current is injected from an isolated variable supply (1 kVA 230/230 V isolation transformer and 0–270 V, 10 A variac) through a 5 A rheostat, and a digital timer with start and stop records how long each device takes to trip. Two IC temperature sensors in brass holders on the bimetal contacts show temperature rise at 0.1 °C resolution on a 16 × 2 LCD. Students plot current against tripping time and compare the classes: B-type MCBs trip magnetically at about 3–5 times rated current and C-type at about 5–10 times.
Key Specifications
| Parameter | Detail |
|---|---|
| Mains supply | 230 V AC ±10%, 50 Hz, single phase |
| Variac | Input 230 V; output 0–270 V; 10 A |
| Isolation transformer | 1 kVA, 230 V / 230 V |
| Devices under test | B-type MCB 6 A; C-type MCB 2 A; HRC fuse 6 A |
| Temperature sensors | 2 IC sensors on MCB bimetal contacts, 0.1 °C resolution |
| Display | 16 × 2 LCD: timer, current, temperature |
| Other | Rheostat 5 A; SPN protective device 10 A |
| Dimensions / weight | W 600 × D 350 × H 450 mm; about 22 kg |
| Included | Learning material CD; 2-year warranty |
Where This Is Used
Used in switchgear and protection laboratories for overload and short-circuit device characteristics. Fuses and MCB cases become hot during overload tests, so let them cool and change devices only with the supply off. Related: Fuse, MCB & Bimetallic Relay Characteristics Trainer (Product ID: 12854) and Over Current Relay Testing System (Product ID: 12977). Browse the full Electronics Engineering Lab Equipment range or related Electricity and Magnetism products.
Frequently Asked Questions
Which devices are tested?
A B-type 6 A MCB, a C-type 2 A MCB and a 6 A HRC fuse.
How is tripping time measured?
With the built-in digital timer, shown on the LCD.
Why are the MCBs transparent?
So the bimetal and trip mechanism can be seen working.
Related Categories
Electronics Engineering Lab Equipment · Electricity and Magnetism · Engineering Lab Equipment
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