(1 Fuse) LITTELFUSE KLKR-20 20A 600VAC 300VDC Fast Acting
Tax included.
THIS LISTING IS FOR (1 PC) KLKR-20 LITTELFUSE
Industrial & Electrical Fuses 20A 600VAC 300VDC Fast Acting
SPECIFICATIONS
Voltage Ratings: AC: 600 Volts
DC: 250 – 500 Volts (CCMR)†
300 Volts (KLDR)
300 Volts (KLKR)
Interrupting Ratings: AC: 200,000 amperes
rms symmetrical
DC: 20,000 amperes
Ampere Range: CCMR:2/10 – 60 amperes
KLDR: 1/10 – 30 amperes
KLKR: 1/10 – 30 amperes
Approvals: AC: Standard 248-4, Class CC
UL Listed 1/10-30 Amps (File No: E81895)
Standard 248, Class CD
UL Listed 35-60 Amps (File No: E71611)
CSA Certified 1/10-60 Amps
(File No: LR29862)
DC: Littelfuse Self-certified
RECOMMENDED FUSE BLOCKS
L60030C series
L60060C series (for CCMR 35–60A)
Compared to other UL Listed fuses, Class CC fuses are the
most current limiting, rating for rating. Because they are
physically compact, they provide this superior protection in a
fraction of the space required by other fuse classes. For
example, when 600V three-pole, 30 ampere Class R fuse
blocks are replaced by Littelfuse Class CC fuse blocks, panel
mounting space is reduced approximately 70%. This is
especially important when a panel contains many fuses to
protect multiple circuit components.
APPLICATIONS
Three Types of Class CC Fuses, Specifically Designed
to Protect Different Types of Components
1) Motor protection — CCMR series; dual-element, timedelay
fuses specifically designed to protect motor circuits
up to 40 HP**.
2) Small transformer protection (control power
transformers) — KLDR series, time-delay fuses designed
to withstand the high magnetizing inrush of transformers.
3) General purpose protection of equipment requiring
fast overload protection — KLKR series, fast-acting
fuses used for protection of equipment containing solidstate
devices or other electronic components requiring fast
response on overloads.
SAFETY
200,000 A.I.R. — Reliable interruption of all overcurrents up
to 200,000 amperes.
Extremely current limiting — Reduces damage caused by
heating and magnetic effects of short-circuit currents . . .
stops damaging short-circuit currents faster than any
mechanical protective device.
SPACE SAVING
Class CC fuses are the smallest 600V, 200,000 A.I.R. fuses
approved for branch circuit protection.
ECONOMICAL
Current limiting design often permits use of readily available,
less costly equipment
KLKR series Class CC fuses are fastacting
fuses intended for general purpose
branch circuit protection. Their
compact size, fast-acting overload
response, and their highly current limiting
design make them ideal for use in
OEM equipment and control panels.
Solid-state devices such as SCRs and
other electronic equipment generally
require fast-acting protection.
Industrial & Electrical Fuses 20A 600VAC 300VDC Fast Acting
SPECIFICATIONS
Voltage Ratings: AC: 600 Volts
DC: 250 – 500 Volts (CCMR)†
300 Volts (KLDR)
300 Volts (KLKR)
Interrupting Ratings: AC: 200,000 amperes
rms symmetrical
DC: 20,000 amperes
Ampere Range: CCMR:2/10 – 60 amperes
KLDR: 1/10 – 30 amperes
KLKR: 1/10 – 30 amperes
Approvals: AC: Standard 248-4, Class CC
UL Listed 1/10-30 Amps (File No: E81895)
Standard 248, Class CD
UL Listed 35-60 Amps (File No: E71611)
CSA Certified 1/10-60 Amps
(File No: LR29862)
DC: Littelfuse Self-certified
RECOMMENDED FUSE BLOCKS
L60030C series
L60060C series (for CCMR 35–60A)
Compared to other UL Listed fuses, Class CC fuses are the
most current limiting, rating for rating. Because they are
physically compact, they provide this superior protection in a
fraction of the space required by other fuse classes. For
example, when 600V three-pole, 30 ampere Class R fuse
blocks are replaced by Littelfuse Class CC fuse blocks, panel
mounting space is reduced approximately 70%. This is
especially important when a panel contains many fuses to
protect multiple circuit components.
APPLICATIONS
Three Types of Class CC Fuses, Specifically Designed
to Protect Different Types of Components
1) Motor protection — CCMR series; dual-element, timedelay
fuses specifically designed to protect motor circuits
up to 40 HP**.
2) Small transformer protection (control power
transformers) — KLDR series, time-delay fuses designed
to withstand the high magnetizing inrush of transformers.
3) General purpose protection of equipment requiring
fast overload protection — KLKR series, fast-acting
fuses used for protection of equipment containing solidstate
devices or other electronic components requiring fast
response on overloads.
SAFETY
200,000 A.I.R. — Reliable interruption of all overcurrents up
to 200,000 amperes.
Extremely current limiting — Reduces damage caused by
heating and magnetic effects of short-circuit currents . . .
stops damaging short-circuit currents faster than any
mechanical protective device.
SPACE SAVING
Class CC fuses are the smallest 600V, 200,000 A.I.R. fuses
approved for branch circuit protection.
ECONOMICAL
Current limiting design often permits use of readily available,
less costly equipment
KLKR series Class CC fuses are fastacting
fuses intended for general purpose
branch circuit protection. Their
compact size, fast-acting overload
response, and their highly current limiting
design make them ideal for use in
OEM equipment and control panels.
Solid-state devices such as SCRs and
other electronic equipment generally
require fast-acting protection.