Dongguan Ampfort Electronics Co., Ltd.
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525 Series 5x20mm Quick-Acting Miniature Cartridge Ceramic Tube Fuse 250V 300V
SCOPE AND DESCRIPTION Of The Ceramic Tube Fuse
Following electronic product specifications apply to fuses of the 525 series. The 525 series is a quick-acting type miniature fuse for overcurrent protection. With its high breaking capacity the 525 fuse series is ideal for supplementary protection in electrical appliances and equipment to
provide excellent protection for components or circuits.Suitable for 250VAC or less than 250VAC voltage circuit, mainly used in home appliances, consumer electronics, adapters, PC power supplies and other computer peripheral products
General Description Of The Ceramic Tube Fuse
The 525 series quick-acting fuse with high breaking capacity for use with printed circuit boards is used in a large variety of applications. This 5x20mm device is constructed of a ceramic tube with electro-plated brass end caps. The 525 series with 300 VAC rating and 1500 Ampere breaking/300V AC rating and 750A breaking, offers excellent quality and is 100% tested for cold resistance and precise length.
Detailed Features Of The Ceramic Tube Fuse
• Miniature fuse with quick-acting, high breaking capacity
• 5mm x 20mm physical dimensions
• Ceramic tube, encapsulated design with nickel - plated brass end caps
• Optional axial leads are Ф0.65mmX30mm at <8A, Ф0.8mmX30mm at 8A~12.5A,Ф1.0mmX30mm at>15A
• Protection against harmful over-currents in primary and secondary applications.
• Lead-free, Halogen-free, RoHS compliant
• Designed compliant to UL248-14 IEC60127-7
• Operating Temperature: -55°C to 125°C
• Storage Conditions:+10℃ to +60℃
• Relative humidity: ≤ 75% yearly average without dew, maximum 30 days at 95%
• Vibration Resistance:
24 cycles at 15 min. each (60068-6)
10-60Hz at 0.75mm amplitude
60-2000Hz at 10g acceleration
AGENCY APPROVALS Of The Ceramic Tube Fuse
| Agency | Agency File Number | Ampere/ Voltage Range |
| c RU us | E300003 | 250V AC: 0.1~25A 300V AC: 0.1~25A |
| TUV | J 50457959 | 250V AC:500mA~25A 300V AC:500mA~25A |
MECHANICAL SPECIFICATIONS Of The Ceramic Tube Fuse
Time vs Current Characteristics Table Of The Ceramic Tube Fuse
(measured with constant current power supply)
| Rated current | 100% | 210% | 275% | 400% | 1000% |
| 0.2A～25A | >1h | <30min | 40ms～20s | 10ms～1s | ≤30ms |
Electrical characteristics Of The Ceramic Tube Fuse
| Rated Current | Max. Voltage | Nominal Melting I²t(A²sec) | Central resisiance value (mΩ) | Breaking Capacity |
| 1A | 300VAC | 0.36 | 273~507 | 1500A@250V AC 1500A@300V AC |
| 1.25A | 0.58 | 126~234 | ||
| 1.6A | 1.23 | 84.0~156 | ||
| 2A | 1.80 | 70.3~130.6 | ||
| 2.5A | 3.63 | 38.5~71.5 | ||
| 3.15A | 8.93 | 23.8~44.2 | ||
| 4A | 11.36 | 23.1~42.9 | ||
| 5A | 23.92 | 14.0~26.0 | ||
| 6.3A | 39.53 | 10.5~19.5 | ||
| 8A | 64.00 | 9.73~18.07 | ||
| 10A | 140.00 | 6.86~12.74 | ||
| 12A | 187.20 | 5.74~10.66 | ||
| 12.5A | 218.75 | 5.180~9.620 | ||
| 15A | 303.75 | 4.375~8.125 | ||
| 16A | 435.20 | 3.745~6.955 | ||
| 20A | 700.00 | 3.045~5.655 | ||
| 25A | 1435.88 | 2.275~4.225 | 750A@250VAC 750A@300VAC |
Notes:
(1) Permissible continuous operating current is ≤100% at ambient temperature of 23°C (73.4°F)
Electrical characteristics
(2) Typical pre-arcing I2t are measured at 10In current.
Average Time Current (I-T) Curves Of The Ceramic Tube Fuse
I2T Curve Of The Ceramic Tube Fuse
Package Of The Ceramic Tube Fuse
Net Weight (100pcs/bag) 555g
Inner box:weight 1.15kg
Master Carton:Weight 12.3kg
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