Bussmann®HI-AMP CIRCUIT PROTECTION
32 Cooper Bussmann Transportation Products • Phone: 1-888-867-8194 • Website: http://www.coopertp.com
SERIES 18X HI-AMP CIRCUIT BREAKER
PART NUMBERING SYSTEM
Series
❏❏❏
18
181 – Type I, 30V
183 – Type II*, 30V
184 – Type III, 48V
185 – Type III-PTT, 48V
Rating
❏❏❏
025 – 25 amps
030 – 30 amps
035 – 35 amps
040 – 40 amps
050 – 50 amps
060 – 60 amps
070 – 70 amps
080 – 80 amps
090 – 90 amps
100 – 100 amps
110 – 110 amps
120 – 120 amps
135 – 135 amps
150 – 150 amps
Mounting
❏–
F – Surface Mount
P – Panel Mount
Terminal Hdwr.
❏❏
00 – Ship w/o nuts
01 – Sems nuts installed
02 – Sems nuts shipped bulk
03 – Stainless Steel Std. nuts &
washers installed
04 – Stainless Steel Std. nuts &
washers shipped bulk
07 – Flange gasket & Sems nuts installed
(Panel Mount Only)
08 – Threaded insert and Sems nuts
installed
12 – Stainless steel nuts and lockwashers
installed
13 – Stainless steel Sems nut installed
Marking
❏❏
0 – Blank cover
1 – Standard Marking; Part Number,
Amp Rating
181, 184, 185 Series - Top Surface
183 Series - Side Surface
S – Standard Ignition Protected
Marking
(Consult factory for special markings.)
600%
500%
500200100403020151050
400%
300%
200%
200%
150%
100%
50%
0%
100%
TIME VS. PERCENT OF RATED CURRENT
TIME IN SECONDS
% 0F RATED CURRENT % 0F RATED CURRENT
-50º 50º 77º 100º 150º 200º 250º0º
(-45º) (10º)(25º)(38º) (65º) (93º) (121º)(-18º)
TEMPERATURE IN DEGREES F°
(TEMPERATURE IN DEGREES C°)
TEMPERATURE DERATING CURVES
RESET
1.05
(26.67)
2.23
(56.64)
2.89
(73.41)
1.44
(36.58) 1.79
(45.47)
.66
(16.76)
1.09*
(27.69)
.40
(10.16)
1.90
(48.26)
Stud insulators
.26 (6.60) dia.
Mtg.holes (2)
Reset lever
(Shown in
operating
position series
184/185)
.26 (6.60) dia.
Mtg.holes (2) Reset lever
(Shown tripped)
1/4-28 Studs
Molded
cover
Molded
cover
*Overall heights of
Series 181 &183
Trip button (Series 185)
.57
(14.49) 1.06
(26.92)
.31
(7.87)
.89 (22.61)
1.44*
(36.58)
Tamper proof
cover
1.90
(48.26)
2.91
(73.91) 2.41
(61.21)
1.54
(39.12)
Surface Mount Panel Mount
*183 Available in Panel
Mount Only (Coverless)
DIMENSIONS (Dims. shown are for reference only. Consult factory for latest prints)
Flange mount
gasket for
thru-wall
applications
(option 07)
AUTO, MANUAL & SWITCHABLE RESET CIRCUIT BREAKERS
SPECIFICATIONS
Single Pole Thermal Type Breakers
Applications: Typically used in auxiliary and accessory circuits in truck, bus, RV and
marine systems. Others include battery chargers and DC audio systems. Series 181,
184 & 185 are sealed for engine compartment and bilge area applications.
Rating: 25-150A, 30VDC; 48VDC (Series 184 & 185).
Interrupt Rating: 3,000A @ 30VDC.
Operating Temperature Rating: –25°F (–32°C) to 180°F (82°C).
Storage Temperature Rating: –30°F (–34°C) to 300°F (149°C).
Materials: Black UL-Rated 94V-0 thermoset plastic. Thermoplastic elastomer stud
insulators are provided on covered units with F-style (surface-mount) bases.
Marking: Standard marking includes amp ratings and part numbers. Custom markings
also available.
Termination: 1/4-28 threaded studs.
Torque Rating: 50in-lb (5.6Nm) max.
Mounting Torque Rating: Panel or surface-mount options; 50in-lb (5.6Nm) max.
Threaded insert option has a max torque of 25in-lb (2.8Nm).
Ingress Protection Rating: IP67.
Features / Options: Series 184 & 185 have a unique reset mechanism which provides
visual indication of tripped condition. Series 185 also features a push-to-trip option.
Compliances: SAE J1625; ABYC E-11; CE; SAE J1171 (Ignition Protected).
