SCHURTER 2040.0714 Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The SCHURTER 2040.0714 is an 800 mA, 250 V AC board mount fuse with radial, can-style vertical packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The fuse features slow-blow response characteristics and is approved by CCC, cURus, and VDE agencies. Substitute parts maintain the core electrical specifications while offering active product status and expanded operational flexibility.

Key Parameters

Parameter	Value
Current Rating	800 mA
Voltage Rating - AC	250 V
Response Time	Slow Blow
Mounting Type	Through Hole
Fuse Type	Board Mount (Cartridge Style Excluded)
Package / Case	Radial, Can, Vertical
Size / Dimension	0.335" Dia x 0.335" H (8.50mm x 8.50mm)
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on electrical and mechanical compatibility:

Direct Manufacturer Substitutes (SCHURTER Series):

Part 0034.6714: Maintains 800 mA, 250 V AC rating with added 125 V DC capability. Active product status. Identical physical dimensions and mounting type.

Parametric Equivalents (SCHURTER Series):

Parts 0034.6914, 0034.6944, 0034.7114, 0034.7214: All maintain 800 mA, 250 V AC rating, slow-blow response, through-hole radial mounting, and identical physical dimensions. These parts differ in breaking capacity and melting I²t values but share core electrical specifications.

Similar Substitute (Cross-Manufacturer):

Part 38508000000 (Littelfuse TE5® 385): Maintains 800 mA current rating and slow-blow response with reduced voltage rating of 125 V AC. Physical dimensions differ slightly. Suitable only where 125 V AC operation is acceptable.

Substitution is determined by matching current rating, voltage rating, response time, mounting type, and physical dimensions. Breaking capacity and melting I²t are secondary parameters that may vary between substitutes.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating (mA)	Voltage AC	Voltage DC	Response Time	Breaking Capacity @ Rated Voltage	Melting I²t	Product Status	Approval Agency
2040.0714	SCHURTER	MSU 250	800	250 V	—	Slow Blow	35A	8	Obsolete	CCC, cURus, VDE
0034.6714	SCHURTER	MST 250	800	250 V	125 V	Slow Blow	35A AC, 50A DC	8	Active	CCC, cURus, KC, VDE
0034.6914	SCHURTER	MXT 250	800	250 V	—	Slow Blow	100A	1.5	Active	CCC, cURus, KC, VDE
0034.6944	SCHURTER	MXT 250	800	250 V	—	Slow Blow	100A	1.5	Active	CCC, cURus, KC, VDE
0034.7114	SCHURTER	MSTU 250	800	250 V	—	Slow Blow	50A	4.05	Active	cULus
0034.7214	SCHURTER	MSTU 250	800	250 V	—	Slow Blow	50A	4.05	Active	cULus
38508000000	Littelfuse	TE5® 385	800	125 V	—	Slow Blow	50A	2.7	Active	cURus

Engineering Selection Recommendations

Primary Substitutes (Recommended): SCHURTER parts 0034.6714, 0034.6914, 0034.6944, 0034.7114, and 0034.7214 are all active products from the same manufacturer. These maintain the 800 mA, 250 V AC specification and identical physical dimensions. Selection among these parts depends on circuit requirements for breaking capacity and melting I²t characteristics. Parts 0034.6714 offers dual AC/DC voltage rating capability. Parts 0034.6914 and 0034.6944 provide higher breaking capacity (100A). Parts 0034.7114 and 0034.7214 provide intermediate breaking capacity (50A) with cULus certification.

Secondary Substitute (Limited Application): Littelfuse 38508000000 is suitable only for applications operating at 125 V AC or lower. This cross-manufacturer substitute reduces voltage rating from 250 V AC to 125 V AC and is not interchangeable in circuits requiring full 250 V AC operation.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status. Approval agency coverage varies; verify that selected substitute meets specific regulatory requirements for your application region.

Frequently Asked Questions (FAQ)

Q: Can I use part 0034.6714 as a direct replacement for 2040.0714? A: Yes. Part 0034.6714 maintains identical current rating (800 mA), AC voltage rating (250 V), response time (slow-blow), mounting type (through-hole radial), and physical dimensions (8.50mm x 8.50mm). The part is active and adds DC voltage capability (125 V DC).

Q: What is the difference between parts 0034.6914 and 0034.7114? A: Both maintain 800 mA, 250 V AC specifications and identical physical dimensions. Part 0034.6914 (MXT 250 series) has breaking capacity of 100A and melting I²t of 1.5. Part 0034.7114 (MSTU 250 series) has breaking capacity of 50A and melting I²t of 4.05. Selection depends on circuit protection requirements.

Q: Can I use Littelfuse 38508000000 in place of the SCHURTER parts? A: Only if your circuit operates at 125 V AC or lower. The Littelfuse part has reduced voltage rating (125 V AC versus 250 V AC) and different physical dimensions. It is not suitable for 250 V AC applications.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected.

Q: What approval agencies certify these fuses? A: SCHURTER parts carry certifications from CCC, cURus, KC, and VDE depending on series. Littelfuse 38508000000 carries cURus certification. Verify that the selected part meets your specific regional regulatory requirements.

Q: Do the substitute parts have the same physical footprint? A: SCHURTER substitutes (0034.6714, 0034.6914, 0034.6944, 0034.7114, 0034.7214) all share identical dimensions of 0.335" Dia x 0.335" H (8.50mm x 8.50mm). Littelfuse 38508000000 has different dimensions: 0.335" L x 0.157" W x 0.315" H (8.50mm x 4.00mm x 8.00mm).

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