Bussmann (now a subsidiary of Eaton Corporation) offers a 315A fuse element product line covering various voltage levels, breaking capacities, and application scenarios.
- Core Models and Parameters
- 170M1472 (690V AC)
Voltage/Current: 690V AC, 315A
Applications: Suitable for semiconductor protection, AC/DC drive systems, and power converters.
Breaking Capacity: 80kA (compliant with IEC 60269 standard).
Dimensions: 0.94 inches in height × 1.42 inches in width × 3.78 inches in length (24×36×96mm).
- 315NH3M (500V AC)
Voltage/Current: 500V AC, 315A.
Applications: Motor protection, compliant with IEC/VDE certifications.
Technical Documentation: Available through the manufacturer’s official website or authorized distributors.
- 315BMT (240V AC)
Voltage/Current: 240V AC, 315A.
Applications: Industrial, utility, and household circuits, compliant with BS88 standard.
Breaking Capacity: 50kA (UL certified).
- PV-315A-3L-15 (1500V DC)
Voltage/Current: 1500V DC, 315A.
Applications: String protection in photovoltaic systems, compatible with SD 3L-S fuse holders.
Certifications: UL 2579 (photovoltaic-specific), IEC 60269-6.
Breaking Capacity: 33kA (at 1500V DC).
- 315FM (690V AC/450V DC)
Voltage/Current: 690V AC/450V DC, 315A.
Applications: High-speed semiconductor protection, compliant with BS88 Part 4 and UL certification.
Breaking Capacity: 200kA (AC) / 40kA (DC).
- Key Technical Features
Breaking Capacity: Ranging from 80kA (basic type) to 200kA (high-spec models), selection should be based on the short-circuit current of the circuit.
Certification Standards:
UL Certification: Models such as 315FM and PV-315A-3L-15 are suitable for the North American market.
IEC/BS88: European and internationally recognized standards, applicable to models like 170M3067 and 315BMT.
Installation Compatibility:
– Some models (e.g., PV series) require matching dedicated fuse holders (e.g., SD 3L-S).
– Dimensions comply with DIN 43620 (NH series) or BS88 (FM series) standards.
III. Purchasing Channels and Price Reference
- Authorized Distributors
– Offer various models (e.g., 170M3067, 315LMT) with fast shipping within the United States.
RS Online: The unit price of 170M1472 is approximately $157.93 (bulk discounts can reach $122.85 per unit).
– The unit price of model 170M1322 is $192.50, and it can be reduced to $158.40 per unit for bulk orders of 100 or more.
– PV-315A-3L-15, suitable for photovoltaic systems, has a unit price of approximately $839.47.
- Local Resources in Los Angeles
– Graybar has service centers near Los Angeles (e.g., Irvine, Santa Ana), with real-time inventory available on its official website.
– Local electrical distributors (WhatsApp: 0086-13811255435) may provide spot support.
- Selection Recommendations
- Voltage Matching: Prioritize models consistent with the nominal voltage of the circuit (e.g., photovoltaic systems require 1500V DC dedicated fuse elements).
- Breaking Capacity: Select based on short-circuit current calculation results; for example, industrial equipment typically requires 80kA or higher.
- Certification Compliance: For the North American market, UL-certified models (e.g., 315FM) are recommended; for the European market, prioritize IEC/BS88 standards.
- Installation Method: Confirm the type of fuse holder (e.g., DIN rail-mounted, bolt-mounted) to avoid size incompatibility.
- Technical Support and Documentation
Installation Guidelines:
– Ensure power is disconnected and verify with a voltage tester before operation. Pay attention to the direction of the fuse element during installation (e.g., the arrow on PV series should align with the current flow).
– After replacement, perform no-load and load tests to ensure good contact.
- Notes
Replacement Compatibility: Fuse elements from different series (e.g., NH, FM, PV) must not be mixed; strictly match the original model.
Inventory Inquiry: For urgent needs, it is recommended to contact distributors directly (e.g., via WhatsApp: 0086-13811255435) to confirm spot availability in Los Angeles warehouses.
Price Fluctuations: Bulk purfor 100 units is $158.40 per unit.
