Bussmann FRN-R Data Sheet
Fusetron
®
FRN-R
Dual-Element, Time-Delay Fuses
⁄Ω¡º-60A
Class RK5 – 250 Volt
Form No. FRN-R ⁄Ω¡º-60
Page 1 of 3
BIF Doc #1019
Bussmann®
9-7-99
SB99013
Rev. A
General Information:
• Provides motor overload, ground fault and short-circuit
protection.
• Helps protect motors against burnout from overloads.
• Helps protect motors against burnout from single phasing
on three phase systems.
• Simplifies and improves blackout prevention (selective
coordination).
• Dual-element fuses can be applied in circuits subject
to temporary motor overloads and surge currents to
provide both high performance short-circuit and
overload protection.
• The overload element provides protection against low level
overcurrent of overloads and will hold an overload which is
five times greater than the ampere rating of the fuse for a
minimum of ten seconds.
1
/10 A to 30A
.56" (± 0.008)
2"
(± 0.31)
35A to 60A
.81" (± 0.008)
3"
(± 0.31)
Catalog Symbol: FRN-R
Current-Limiting
Dual-Element, Time-Delay – 10 seconds (minimum) at 500%
rated current
Ampere Rating: ⁄Ω¡º to 60 Amperes
Voltage Rating: 250 Volts AC (or less)
Interrupting Rating: 200,000A RMS Sym.
DC Ratings: 20,000 AIC @ 125 VDC
Agency Approvals:
UL Listed, Std. 248-12, Class RK-5, Guide JDDZ, File E4273
CSA Certified, C22.2 No. 248.12, Class 1422-01, File 53787
Catalog Numbers
FRN-R-⁄Ω¡º FRN-R-1°Ω¡º FRN-R-8
FRN-R-⁄Ω• FRN-R-2 FRN-R-9
FRN-R-⁄fiΩ¡ºº FRN-R-2⁄Ω¢ FRN-R-10
FRN-R-¤Ω¡º FRN-R-2⁄Ω™ FRN-R-12
FRN-R-⁄Ω¢ FRN-R-2°Ω¡º FRN-R-15
FRN-R-‹Ω¡º FRN-R-3 FRN-R-17⁄Ω™
FRN-R-›Ω¡º FRN-R-3¤Ω¡º FRN-R-20
FRN-R-⁄Ω™ FRN-R-3⁄Ω™ FRN-R-25
FRN-R-flꭧ FRN-R-4 FRN-R-30
FRN-R-°Ω¡º FRN-R-4⁄Ω™ FRN-R-35
FRN-R-1 FRN-R-5 FRN-R-40
FRN-R-1⁄Ω• FRN-R-5 flΩ¡º FRN-R-45
FRN-R-1⁄Ω¢ FRN-R-6 FRN-R-50
FRN-R-1›Ω¡º FRN-R-6⁄Ω¢ FRN-R-60
FRN-R-1⁄Ω™ FRN-R-7 —
FRN-R-1flΩ¡º FRN-R-7⁄Ω™ —
Fuseblocks for Class R Fuses
(Clip Retaining Spring Standard, Suffix “R”)
Terminal Type (Suffix No.)
Basic
Screw w/ Box Lug w/
⁄Ω¢∑
Catalog — Pres. — Clip Quick-
Amps Poles Number Plate CU only Connect
⁄Ω¡º 1 R25030-1 SR PR CR COR QR
to 2 R25030-2 SR PR CR COR QR
30 3 R25030-3 SR PR CR COR QR
31 1 R25060-1 SR — CR COR —
to 2 R25060-2 SR — CR COR —
60 3 R25060-3 SR — CR COR —
Fuse Reducers For Class R Fuses
Equipment Desired Fuse Catalog Number
Fuse Clips (Case) Size (Pairs) 250V
60A 30A No. 263-R
100A
30A No. 213-R
60A No. 216-R
200A 60A No. 226-R
Carton Quantity and Weight
Ampere Carton
Weight*
Ratings Qty. Lbs. Kg.
0–15 10 0.40 0.181
17.5–30 10 0.50 0.227
35–60 10 1.00 0.453
*Weight per carton.
Dimensional Data
CE logo denotes compliance with European Union Low Voltage Directive
(50-1000 VAC, 75-1500 VDC). Refer to BIF document #8002 or contact
Bussmann Application Engineering at 636-527-1270 for more information.
Fusetron
®
FRN-R
Dual-Element, Time-Delay Fuses
⁄Ω¡º-60A
Class RK5 – 250 Volt
Form No. FRN-R ⁄Ω¡º-60
Page 2 of 3
BIF Doc #1019
Bussmann
®
9-7-99
SB99013
Rev. A
Time-Current Characteristic Curves–Average Melt
1.6
6.25
2.5
2
3.245
AMPERE RATING
81012
.6
.5
.1.2.15.3.4
300
100
10
1
TIME IN SECONDS
.1
.8
1.25
1
60A
30A
15A
8A
300
100
10
10A
1
AMPERE
RATING
.01
TIME IN SECONDS
.1
1
CURRENT IN AMPERES
10
100
1,000
.01
.1
10
100
CURRENT IN AMPERES
1,000
10,000