Specifications
Amperage 40A
Maximum Voltage 120V AC
32V DC
Circuit Breaker Type Thermal trip, manual push-button reset only
Terminal Stud Torque 30 in-lb (3.39 Nm)
Interrupt Capacity The fault current that a device, normally a fuse or circuit breaker is capable of breaking without damage. 3000A @ 120V AC
5000A @ 32V DC
Minimum Operating Temperature -54ø C
Maximum Operating Temperature 74ø C
Mounting Screw Thread #8-32
Terminal Stud #10-32 Stainless Steel
Weight 0.16lb (0.07 kg)
Clearly Specified Protection.
Available in 16 standard ratings (2-60A), the Series
18 from MP expands the specified performance
capabilities of a classic circuit breaker design.
Electrical, mechanical and environmental
specifications have all been defined and validated
through testing to the requirements of the
American Boat and Yacht Council (ABYC), the US
Coast Guard (USCG), the Society of Automotive
Engineers (SAE), Underwriters Laboratories (UL)
and various Military Standards.
The Series 18 from MP.
Count on it. Wherever it goes.
Robust Design for Harsh Environments.
The Series 18 was designed for the harshest of
environments. The weatherproof and ignition proof
characteristics are especially well suited to
applications in Marine, Heavy Equipment, Trucks,
Buses and Battery Chargers. All materials for the
Series 18 were carefully chosen for resistance to
UV and flammability. Equipment that must perform
in the most demanding environmental conditions
relies on the Series 18.
The Series 18 uses a doublebreak
design to achieve
increased short-circuit
interruption capability.
The push-to-reset actuator is
trip-free, ensuring the Series 18
cannot be forced to continuously
maintain a closed circuit if an
overload condition exists.
Minimum Ultimate Trip
The Series 18 Style 0 offers a minimum
ultimate trip of 100% of rated current at
25§C / 77§F, while Style 1 offers a
minimum ultimate trip of 110%.
Maximum Ultimate Trip
The Series 18 Style 0 offers a maximum
ultimate trip of 135% of rated current at
25§C / 77§F, while Style 1 offers a maximum
ultimate trip of 143%.
Voltage Ratings
The Series 18 is rated at 120VAC and 32VDC.
Vibration
The Series 18 is rated at 10g per MIL-STD-202,
Method 204, Test Condition A.
Shock
The Series 18 is rated at 100g per MIL-STD-
202, Method 213, Test Condition A.
Corrosion (Salt Spray)
The Series 18 conforms to MIL-STD-202,
Method 101, Test Condition A for 96 hours at
5% salt spray.
Ignition Proof
The Series 18 conforms to USCG Title 33, CFR,
Section 183.410(a) per UL1500 testing.
Weatherproof
The Series 18 conforms to the weatherproof
requirements of SAE J1428.
Humidity
The Series 18 conforms to MIL-STD-202,
Method 106, for 240 hours at 95% relative
humidity.
Weight
Approximately 39 grams
Mounting Options
Panel mounting options include both throughhole
inserts for #10-32 thread clearance and
#8-32 threaded mounting inserts.
Interrupt Capacity
Series 18 Style 0 & 1 tested per:
ABYC E11: 3000A (32VDC and 120VAC).
UL 1077: 3000A (32VDC and 120VAC).
SAE J553 compliant.
Series 18 Style 1 also tested per:
ABYC E11: 5000A (32VDC).
UL 1077: 5000A (32VDC).
Resettable Overload Capacity
The Series 18 may be reset at a minimum of
ten times rated value.
