What size is A class CC fuse?
A superior, all-purpose, space-saving branch circuit fuse that meets most protection requirements up to 30A. Very compact, with a physical size only 13⁄32″ x 11⁄2″ (10.3 x 38.1mm) with rejction tip.
What are Class CC fuses used for?
Class CC fuses. These non-renewable fuses are current-limiting and intended for the protection of components sensitive to short-time overloads, noninductive loads, and short-circuit protection of motor circuits.
What are the classes of fuses?
UL Fuse Classification Chart
| UL CLASS | FUSE OVERLOAD CHARACTERISTICS | INTERRUPTING RATING, AMPERES |
|---|---|---|
| CD | TIME-DELAY | 200,000 |
| G | TIME-DELAY | 100,000 |
| K5 | FAST-ACTING | 50,000 |
| H | RENEWABLE FUSES FAST-ACTING | 10,000 |
How do you choose a fuse rating?
In order to select the right amperage of the fuse, you first need to know the full-load steady-state current of the circuit at an ambient temperature of 25º C (68º F). Once the current value is determined, then a fuse rating should be selected as to be 135% of this value (taken to the next standard value).
What are RK5 fuses used for?
Edison dual element time-delay class RK5 fuses are recommended for AC power distribution mains, feeders and branch circuits for motors and transformers, or lighting and heating.
How do I calculate fuse sizes?
To calculate a fuse rating, manufacturers work from a simple equation:
- Power (watts) = Voltage x Current (amps) What we really want to know with this equation is the current (amps).
- Amps = Watts / Voltage. So, let’s say we need to work out the fuse rating for a washing machine.
- 850/120 = 7.08 amps.
What does class RK5 mean?
What is a Class RK5 Fuse,? A UL Class RK5 fuse is a current limiting, time delay fuse, that is rated to interrupt a minimum of 200,000 amps. The UL Class RK5 fuse is less expensive but less current limiting than the Class RK1 fuse,. It has a dual element, construction. RK5 fuses are rated at either 250 or 600 volts AC.
What is A class RK1 fuse?
What is a Class RK1 Fuse,? The UL Class RK1 fuse is current limiting, fuse that is rated to interrupt a minimum of 200,000 amps. The RK1 fuse is rated at either 250 volts AC or 600 volts AC and is available in fast acting, or time delay versions. The RK1 fuse has ampere ratings range from 1/10 to 600 amps.
How do you determine what size fuse you need?
B Calculate MINIMUM FUSE AMPERAGE by multiplying product amperage rating by 125%. Minimum fuse amperage provides more protection for the wire but may result in nuisance blows. Example: 80A x 125% = 100A.
What Fuse should I use?
Wire Size vs. Amperage
How to select a fuse?
Direct Solder – In this method,the fuse is directly soldered into or onto the printed circuit board (PCB).
What is a dual element time delay fuse?
Dual-element, time-delay fuses provide a time-delay in the low overload range that eliminates needless circuit interruption due to harmless overloads and transient conditions. What does T on a fuse mean? The ‘T’ stands for ‘Time lag’. This is the same as anti-surge.
How to choose fuse?
– A Find the MAXIMUM FUSE AMPERAGE. Maximum fuse amperage reduces nuisance blows but offers less protection for the wire. – B Calculate MINIMUM FUSE AMPERAGE. – C Choose FUSE AMPERAGE. – D Find AVAILABLE FUSES. – Click the image below to enlarge – A Using the same colored headings as in the steps above – B Consider environmental factors.