Ceramic Car Fuse, ANL Mega Bolt Down Fuses for Automotive DC Circuits
Ceramic high‑temp fork bolt‑down short‑circuit protector, ISO20934 40A‑650A 70V DC, M8 51 mm mounting, short‑circuit‑only protective device.
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Dimensions (mm)
Ceramic high‑temp fork bolt‑down short‑circuit protector is a heavy‑duty DC protective device compliant with ISO 20934 Special Purpose Fuses. Equipped with high‑temperature‑resistant ceramic shell and tin‑plated copper‑alloy terminals, this protector adopts dual M8 bolt installation with 51 mm hole centre‑to‑centre spacing. Important note: This is a short‑circuit‑only protector and cannot provide overload‑protection. It is designed for 70V DC heavy‑current circuits in new‑energy vehicles, marine equipment and energy‑storage battery systems.
Core Features
- High‑temperature resistant ceramic shell, stable performance under harsh on‑board thermal conditions
- Tin‑plated copper‑alloy terminals; dual M8 bolt holes with 51 mm centre‑to‑centre distance
- Specified mounting torque: 12.0 Nm ±1 Nm to ensure reliable heavy‑current contact performance
- Rated breaking capacity: 70V DC; short‑circuit‑only device, no overload‑protection capability
- Compliant with ISO 20934 Special Purpose Fuses industry standard
- Wide operating temperature:‑40℃ ~ +125℃; maximum allowable contact‑point temperature up to 150℃
- Broad current range 40A‑650A for heavy‑duty battery main‑circuit short‑circuit protection
General Specifications
| Item | Parameter |
|---|---|
| Shell Material | Ceramic high temperature resistant |
| Terminal | Copper alloy, tin‑plated, 2 x M8 bolts, 51 mm hole centre distance |
| Mounting Torque | 12.0 Nm ±1 Nm |
| Breaking Capacity | 70V DC |
| Compliance Standard | ISO 20934 Special Purpose Fuses |
| Operating Temperature Range | ‑40℃ ~ +125℃; Max contact‑point temperature:150℃ |
| Device Type | Short‑circuit protector only (without overload‑protection) |
Time‑Current Characteristics
| % of Rated Current | 80A‑250A Min / Max(s) | 300A‑650A Min / Max(s) |
|---|---|---|
| 75% | ‑ / ‑ | ‑ / 14400 s |
| 100% | 14400 s / ‑ | ‑ / ‑ |
| 135% | 120 s / 1800 s | ‑ / ‑ |
| 200% | 1 s / 15 s | 1 s / 15 s |
| 350% | 0.300 s / 5 s | 0.500 s / 5 s |
| 600% | 0.100 s / 1 s | 0.100 s / 1 s |
Electrical Ratings & Typical Voltage Drop
| Internal Model No. | Rated Current(A) | Typ Voltage Drop |
|---|---|---|
| ANL‑B30B040 | 40A | ≤110 mV |
| ANL‑B30B050 | 50A | ≤110 mV |
| ANL‑B30B060 | 60A | ≤110 mV |
| ANL‑B30B070 | 70A | ≤110 mV |
| ANL‑B30B080 | 80A | ≤110 mV |
| ANL‑B30B100 | 100A | ≤110 mV |
| ANL‑B30B125 | 125A | ≤110 mV |
| ANL‑B30B150 | 150A | ≤110 mV |
| ANL‑B30B175 | 175A | ≤110 mV |
| ANL‑B30B200 | 200A | ≤110 mV |
| ANL‑B30B225 | 225A | ≤110 mV |
| ANL‑B30B250 | 250A | ≤110 mV |
| ANL‑B30B275 | 275A | ≤80 mV |
| ANL‑B30B300 | 300A | ≤80 mV |
| ANL‑B30B350 | 350A | ≤80 mV |
| ANL‑B30B400 | 400A | ≤80 mV |
| ANL‑B30B450 | 450A | ≤80 mV |
| ANL‑B30B500 | 500A | ≤80 mV |
| ANL‑B30B550 | 550A | ≤80 mV |
| ANL‑B30B600 | 600A | ≤80 mV |
| ANL‑B30B650 | 650A | ≤80 mV |
Typical Application Scenarios
- 70V DC new‑energy vehicle battery bank short‑circuit protection
- Heavy‑duty special vehicle and mobile equipment DC power distribution
- RV, yacht and marine vessel high‑current DC‑system protection
- Energy‑storage system main‑circuit short‑circuit protection
Match this ceramic high‑temp fork bolt‑down short‑circuit protector with our bolt‑down fuse holders for complete power‑distribution assembly.
Installation & Safety Notes
- This is short‑circuit‑only protector and cannot provide overload‑protection function.
- Disconnect main power before installation or replacement to avoid accidental short‑circuit risk.
- Observe mounting torque 12.0 Nm ±1 Nm; loose contact will cause over‑heating under heavy‑current load.
- For enclosed high‑temperature compartments, temperature derating assessment shall be performed.
- Only replace with same‑specification protector to keep original circuit‑protection performance.
Câu hỏi thường gặp
Q: What is ceramic high‑temp fork bolt‑down short‑circuit protector?
A: Ceramic high‑temp fork bolt‑down short‑circuit protector is ISO20934‑compliant fork‑bolt DC protective component with ceramic high‑temperature shell. It serves for 70V DC heavy‑current short‑circuit protection in EV, marine and energy‑‑storage systems.
Q: Can this protector defend against overload faults?
A: No. It is short‑circuit‑only protector and offers no overload‑protection capability.
Q: What mounting specification should I follow?
A: Dual M8 bolt holes with 51 mm centre‑distance; recommended tightening torque:12.0 Nm ±1 Nm.
Q: Which standard does this product comply with?
A: Complies with ISO 20934 Special Purpose Fuses standard.
Q: What ampere ratings are available?
A: Available ratings:40A,50A,60A,70A,80A,100A,125A,150A,175A,200A,225A,250A,275A,300A,350A,400A,450A,500A,550A,600A,650A.
Q: What is its breaking‑capacity?
A: Rated breaking‑capacity is 70V DC.
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