SC-12 Ceramic Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The SC-12 is a 12A ceramic cartridge fuse rated for 600VAC/170VDC operation, manufactured by Eaton - Bussmann Electrical Division. This slow-blow fuse is designed for applications requiring holder-mounted cartridge protection in industrial and electrical systems. The part maintains active product status with 1051 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary SC-12 becomes unavailable or when supply chain flexibility is required.

Substiute Parts

SC-12

Eaton - Bussmann Electrical DivisionIn Stock: 1155SC-12 Datasheet

Current PartRFQ

0SLC012.T

Littelfuse Inc.In Stock: 11780SLC012.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC-12 is determined by strict equivalence across the following critical parameters:

• Current Rating: 12 A (exact match required)
• Voltage Rating - AC: 600 V (exact match required)
• Voltage Rating - DC: 170 V (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Package / Case: Cartridge, Non-Standard (exact match required)
• Breaking Capacity @ Rated Voltage: 100kA AC, 10kA DC (exact match required)

The 0SLC012.T from Littelfuse Inc. meets all critical electrical and mechanical parameters. While the response time differs (Medium Blow vs. Slow Blow), the substitute maintains identical voltage ratings, current capacity, breaking capacity, and physical cartridge form factor. Both parts require holder mounting and are certified to the same approval agencies (CE, CSA, UL).

Parameter Comparison

Engineering Selection Recommendations

Both the SC-12 and 0SLC012.T maintain active product status and carry equivalent regulatory certifications (CE, CSA, UL). The 0SLC012.T includes additional QPL certification. Physical dimensions are within tolerance (diameter 0.410" vs. 0.406", length 1.310" vs. 1.311"), ensuring compatibility with standard cartridge holders. Both parts achieve identical breaking capacity ratings of 100kA AC and 10kA DC at rated voltage. The primary distinction is response time classification: SC-12 operates as slow-blow while 0SLC012.T operates as medium-blow. Selection between these parts depends on circuit protection requirements specific to the application's inrush current characteristics and load profile.

Frequently Asked Questions (FAQ)

Q: Can the 0SLC012.T replace the SC-12 in all applications?

A: The 0SLC012.T is electrically and mechanically equivalent to the SC-12 across all critical parameters: 12A current rating, 600VAC/170VDC voltage ratings, 100kA AC/10kA DC breaking capacity, and cartridge form factor. Both require holder mounting. The response time difference (medium-blow vs. slow-blow) may affect circuit behavior during inrush conditions and must be evaluated against specific application requirements.

Q: Are the physical dimensions identical?

A: Dimensions are within tolerance. SC-12 measures 0.410" diameter × 1.310" length; 0SLC012.T measures 0.406" diameter × 1.311" length. These variations are within standard cartridge holder specifications and do not affect mechanical compatibility.

Q: Do both parts carry the same certifications?

A: Both parts are certified to CE, CSA, and UL standards. The 0SLC012.T additionally carries QPL certification. Both meet RoHS compliance requirements (SC-12: RoHS Compliant; 0SLC012.T: ROHS3 Compliant).

Q: What is the difference between slow-blow and medium-blow response times?

A: Response time classification indicates how quickly the fuse element melts under overcurrent conditions. Slow-blow fuses tolerate temporary inrush currents before opening, while medium-blow fuses respond faster to sustained overcurrent. Application circuit characteristics determine which response time is appropriate.

Q: Are both parts currently available?

A: Yes. SC-12 inventory: 1051 units. 0SLC012.T inventory: 1121 units. Both maintain active product status.