For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
217
IEC and British Standard Fuses
IEC &
British
Fuses
Application Data
The standard range of fuses for low voltage industrial and
general purpose applications meet the requirements of
BS 88 and IEC 60269. By using advanced fuse technology,
current ratings up to 400A have compact dimensions, but
retain standard dimensional and performance requirements.
These designs are for 315/240V systems. The standard
range of fuses are available from 2-1250A in the following
tag forms: Offset Blade - Offset Bolted - Center Bolted.
Supplementary ranges cover applications up to 660Vac and
500Vdc including those with nonstandard tag fixings.
Cooper Bussmann fuses are manufactured under quality
systems independently assessed to BS 5750 (ISO 9002) and
appropriate ratings carry the ASTA 20 endorsement.
Selecting fuses is relatively simple and effective. The
following notes cover the majority of applications. For further
information contact our Application Engineers at
636-527-1270.
Circuit Loading
The current rating of the fuse should not be less than the full
load current of the circuit. The circuit should be so designed
that small overloads of long duration will not be of frequent
occurrence.
Cable Ratings & Protection
There is an increasing move away from 70°C PVC insulation
to materials that are more environmentally friendly, for
example 90°C XLPE. The ratings of fusegear, switches,
accessories, etc. are generally based upon the equipment
being connected to conductors intended to be operated at a
temperature not exceeding 70°C in normal service.
In view of the above, it is recommended that the practice of
designs based upon conductor temperatures of 70°C be
regarded as the norm. The equipment manufacturer should
be consulted to ascertain the reduction of nominal current
rating of the equipment if conductor temperatures exceeding
70°C are used. In addition, an overriding factor is often
voltage drop.
Fuses with gG characteristics protect associated cables
against both overload and short-circuit current, provided that
the current rating of the fuse 1N is equal or less than the
current carrying capacity of the cable 1z.
In motor circuits, the motor starter will provide the overload
protection and the fuses will provide the short-circuit
protection. The maximum fuse size that can be used
depends upon the type of cable used and is determined
using the appropriate K factor. The following table gives the
maximum sizes of fuses that are recommended for two
popular cables with copper conductors, 70°C PVC (K = 115)
and 90°C thermosetting (K = 143).
Section Contents
Page
Application Data .....................217-218
CSA Type P and Type D fuses
(CDS, CDN & PON) . . . . . . . . . . . . . . . . . . . . . . . . . . . .219
Tron
®
HRC Form II Class C fuses
(CGL Form II Class C) . . . . . . . . . . . . . . . . . . . . . . . . . . 220
HRCI Industrial ceramic body fuses (CIF21 HRCI-CA &
CIF06 HRCI-CB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
HRCI-J Fast-acting fuses (CJ HRCI-J) . . . . . . . . . . . . . . . 222
HRCI-Miscellaneous Type K fuses (CIH, CIK &
CIL HRCI-MISC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
HRC Form II current-limiting fuses . . . . . . . . . . . . . . . . . .224
BS 88 British Standard low voltage fuses (SSD, NSD,
ESD & STD, NITD, AAO, BAO, OSD, CEO,
DEO BS 88 Part 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225
BS 88 British Standard low voltage fuses (AC, AD, BC,
BD, CD, DD, ED, EFS & EF, FF, FG, GF, GG,
GH BS 88) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226
DIN Style Type D (D16, D27, D33, D125 Type D) . . . . . . 227
Neozed low voltage fuses (NZ01, NZ02 Type D0) . . . . . . 227
NH HRC Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228-231
Class gG/gL IEC Industrial ferrule fuses (C08G, C08M,
C10G, C10M, C14G, C14M, C22G, C22M) . . . . . . . . . . 232
Class aM IEC Industrial ferrule fuses (C08M, C10M,
C14M, C22M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233
Class aM & gG/gL IEC Industrial ferrule fuses with striker
(C14G_S, C22G_S, C14M_S, C22M_S) . . . . . . . . . . . . . 234
HRC fuse holders
CAMaster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235
SAFEloc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235
RED indicates NEW information
IEC & British Standard Fuses
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
218
Application Data for BS Low Voltage Fuses
IEC & British Standard Fuses
Max. Fuse Rating (amps)
Cable Size (mm
2
) K = 115 K = 143
11616
1,5 20 25*
2.5 32* 32*
4 50* 50*
6 63* 63*
10 100* 125*
16 125* 160*
25 200* 250*
35 315* 355*
50 400* 500
70 560 630
95 710 800
120 800 1000
* Extended Motor Circuit dual ratings can be used.
Protection Against Electrical Shock
For a TN System, a disconnecting time not exceeding 5s is
permitted for a distribution circuit. The maximum values of
earth fault loop impedance (Zs) of 240V for Cooper
Bussmann gG fuses to BS 88: Parts 2 and 6 are:
Rating (A) Zs (Ohms) Rating (A) Zs (Ohms) Rating (A) Zs (Ohms)
6 14 50 1.1 250 0.16
10 7.7 63 0.86 315 0.13
16 4.3 80 0.60 400 0.096
20 3.0 100 0.44 500 0.073
25 2.4 125 0.35 630 0.054
32 1.9 160 0.27 800 0.044
40 1.4 200 0.20
Ambient Temperature
The derating, in terms of current, of 0.5% per °C above an
ambient of 35°C is recommended.
Interr upting Rating
The standardized interrupting rating values are 80kA for
voltages of 415Vac and above, and 40kA for DC
applications. The 240Vac designs have an interrupting rating
of 50kA.
Coordination Ratio
All fuses to BS 88 Parts 2 and 6 will give a coordination ratio
of 2:1; and for most practical situations a ratio of 1.6:1 (two
steps in the R10 series). Example: an upstream fuse rated at
160A will coordinate with a downstream fuse rated at 100A.
Current and Energy Limitation
The range of fuses have pre-arcing I
2
t values towards the
bottom limits of BS 88 Parts 2 and 6. This ensures excellent
current and energy limitation. They also have lower power
losses at rated current. This assists in the appropriate
interchangeability with other makes of fuses.
Transformers
When fuses are used on the primary side of transformers,
the normal fuse current rating should be at least twice the
nominal transformer primary current.
Fluorescent Lighting
The normal fuse current rating should be at least twice the
normal full load current of the maximum number of lights to
be simultaneously switched.
Capacitor Circuits
For power factor correction in capacitor circuits, the fuse
should be chosen with a current rating greater than 1.5 times
the rated capacitor current. This takes into account the high
inrush current, circuit harmonics and capacitor tolerances.
Motor Circuits
In motor circuits, the fuse has to withstand the motor's
starting current and often requires a higher rating than the
motor's full load current. Coordination recommendations are
made by the manufacturers of motor starters in accordance
with IEC 60947-4-1. To get Type 2 coordination with fuses,
tests are performed with the latest gG or gM fuses to BS 88
or IEC 60269 that have pre-arcing I
2
t values towards the
bottom of specified limits. This means that Cooper
Bussmann fuses are suitable to provide Type 2 coordination.
Extended dual ratings of motor circuit protection fuses with
gM characteristics are available in most popular fuse sizes to
extend the use of associated equipment with appropriate
economies. In the majority of applications, gG fuses are
used. It is not essential to use gM fuses for motor circuit
protection, they simply extend the utilization of standard
equipment.
Below is a table of recommended fuses at 415V. In most
applications, the run-up time is less than 5 seconds and duty
is infrequent - no more than twice per hour. The next larger
rating should be used for more demanding applications.
Direct On-line Asst. Start
Standard Motor Circuit Standard
Rating Motor (gG) (gM) (gG)
kW A A A A
0.25 0.8 4 - 2
0.37 1.1 4 - 2
0.55 1.5 6 - 4
0.75 2.0 6 - 4
1.1 3 0 10 - 6
1.5 3.6 16 - 0 1
2.2 5.0 16 - 0 1
3.0 6.5 20 - 6 1
4.0 8.4 20 - 6 1
5.5 11.0 25 20M25 2 20
7.5 15.0 40 32M40 25
11.0 20.0 50 32M50 32
15.0 27.0 63 32M63 40
18.5 33.0 80 63M80 50
22.0 38.0 80 63M80 50
30.0 54.0 100 63M100 80
37.0 66.0 125 100M125 80
45.0 79.0 160 100M160 100
55.0 98.0 160 100M160 100
75.0 135.0 250 200M250 160
90.0 155.0 250 200M250 160
110.0 185.0 315 200M315 200
132.0 220.0 355 315M400 250
150.0 250.0 355 315M400 315
185.0 310.0 450 400M500 355
200.0 335.0 500 4 00M500 400
225.0 375.0 560 - 400
250.0 415.0 560 - 450
280.0 460.0 630 - 500
335.0 562.0 710 - 630
355.0 596.0 800 - 710
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
219
CSA Type P and Type D Fuses
IEC &
British
Fuses
IEC & British Standard Fuses
Catalog Numbers
Basic Catalog
Dimensions in (mm)
Number Amp A B Max C Min D Min E F
and Volts Ratings Overall Diameter Blade Length Barrel Length Blade Thickness Blade Width
1-30 2.0 (50.8) 0.56 (14.3) — — — —
35-60 3.0 (76.2) 0.81 (20.6) — — — —
CDN/PON 250Vac
70-100 5.88 (149.4) — 1.0 (25.4) — 0.13 (3.2) 0.75 (19.1)
110-200 7.3 (185.4) — 1.38 (34.9) 4.13 (104.8) 0.19 (4.8) 1.13 (28.6)
225-400 8.63 (219.2) — 1.88 (47.6) 4.63 (117.5) 0.25 (6.4) 1.63 (41.3)
450-600 10.38 (263.7) — 2.25 (57.2) 5.19 (131.8) 0.25 (6.4) 2 (50.8)
1-30 5.0 (127.0) 0.81 (20.6) — — — —
35-60 5.5 (139.7) 1.06 (27.0) — — — —
CDS 600Vac
70-100 7.88 (200.2) — 1.0 (25.4) — 0.13 (3.2) 0.75 (19.1)
110-200 9.63 (244.6) — 1.38 (34.9) 6.13 (115.6) 0.19 (4.8) 1.13 (28.6)
225-400 11.63 (295.4) — 1.88 (47.6) 7.13 (118.1) 0.25 (6.4) 1.63 (41.3)
450-600 13.38 (339.9) — 2.25 (57.2) 8.19 (208.0) 0.25 (6.4) 2 (50.8)
To Order
To order, specify Basic Catalog Number and amp rating. Example: CDN-30
E
B
F
A
DC
Knife Blade—70 through 600A
A
B
Ferrule Design—1 through 60A
Data Sheet: 4126
CDS, CDN & PON Type P & D
Specifications
Description: CSA time-delay Type D & P
fuses.
Dimensions: See Catalog Numbers table
and Dimensions illustration.
Ratings:
Volts: — 250Vac (CDN & PON)
— 600Vac (CDS)
Amps: — 10-600A
IR: — 10kA minimum
Agency Information: CE, CSA Certified to C22.2 No. 59.1.
Features and Benefits
• Economical fuse in a variety of ratings for applications not
requiring time-delay.
Typical Applications
• Lighting, heating and other circuits not subject to temporary
surges and where available short-circuit current are
relatively low.
Basic Catalog Numbers
Time-Delay CSA Type “D” Fuses
Catalog Amp
Numbers Volts Ratings
Below 10A use FRN-R 10, 12, 15, 20, 25, 30,
35, 40, 45, 50, 60, 70, 80, 90, 100
CDN 250Vac
110, 125, 150, 175, 200, 225, 250, 300, 350, 400,
450, 500, 600
Below 10A use FRS-R 10, 12, 15, 20, 25, 30,
35, 40, 45, 50, 60
CDS 600Vac
70, 80, 90, 100, 110, 125, 150, 175, 200,
225, 250, 300, 350, 400, 450, 500, 600
One-Time CSA Type “P” Fuses
Catalog Amp
Number Volts Ratings
PON 250Vac 15, 20, 25, 30, 35, 40, 45, 50, 60
Dimensions