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United States
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800.816.7809
Fax: 901.252.1354
Technical Services
Tel: 888.862.3289
www.tnb.com
H-69
Elastimold
®
Molded Current-Limiting Fuses (MCLF)
Power & High Voltage —
Elastimold
®
& Hi-Tech
®
Fuse Products
Interchangeable
Molded Rubber
End Fittings
Assembled Fuse Unit
Replaceable Molded Rubber
Current-Limiting Fuse
Assembled Fuse Unit with Optional
Wall-Mounting Bracket
* 15.5kV L-G rated fuses require 75% grounded load to be applied on a 25kV system.
** 17.2kV L-G rated fuses require at least 75% grounded load to be applied on a 28kV system.
Note:
Fuse replacement requires the MCLF to be de-energized.
Fuses are only suitable for the system voltage class shown if the recovery voltage across the fuse will not
exceed its rated maximum voltage. For three-phase applications, this generally requires that protected
transformers be gndY-gndY and have at least 50% grounded load.
Application Information
Construction: Submersible, non-venting, deadfront, corrosion resistant
Ambient Temperature Range:
-30° C to 65° C for 6–50A fuses;
-30° C to 40° C for >50A fuses.
Certified Tests
Elastimold
®
Molded Current-Limiting Fuses
have been designed and tested per applicable
portions of IEEE, ANSI, NEMA and other industry
standards, including:
ANSI C37.40
Standard for Current-Limiting Fuse
Service Conditions
ANSI C37.41
Standard for Current-Limiting Fuse
Design & Testing
ANSI C37.47
Standard for Current-Limiting Fuse
Ratings & Specifications
ANSI/IEEE 386
Standard for Separable
Connectors and Bushing Interfaces
Ratings
System Voltage Class (kV)
5
15
25/28*
35
Rated Maximum Fuse Voltage (kV)
5.5
8.3/10** 15.5/17.2**
23
Frequency (Hz)
50/60
50/60
50/60
50/60
BIL Impulse Withstand (kV)
60
95
125/140
150
One-Minute AC Withstand (kV)
34
34
40–45
50
Fifteen-Minute DC Withstand (kV)
53
53
78
103
Corona Extinction (kV)
11
11
19/21.5
26
Symmetrical Interrupting Capability (Amp)
50,000
50,000
50,000
50,000
Current Rating (Amp)
80–180 10–115 10–100
10–50