MDL3800F Circuit Breaker
|Voltage:||240 VAC 480 VAC 600 VAC|
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|kAIC Ratings:||65 KAIC at 240 Volts|
50 KAIC at 480 Volts
25 KAIC at 600 Volts
|Lug Kits:||TA700MA1 = #1 AWG - 500 MCM (2 Barrel)|
TA800MA2 = 3/0 AWG - 400 MCM (3 Barrel)
|Mounting Hardware:||KPRL4MD = Single mount in PRL4 panel |
|Dimensions:||8.25 w x 16 h x 4 d|
|Common Accessories:||SNT4RP11K = 120 VAC Shunt Trip|
UVH4LP08K = 120 VAC Under Voltage Release or UVR
A1X4PK = 1 N/O and 1 N/C Auxilary Switch
|Catalogue Data Sheet:||Click to download or view PDF|
Thermomagnetic circuit breakers, like the MDL3800F are the type found in most distribution boards. The MDL3800F circuit breaker incorporates both instantaneous and long-time trip functions. The electromagnet characteristics of the MDL3800F breaker allow it to trip instantaneously under large surges in current (e.g., short circuits). The MDL3800F contains a bimetallic strip within the breaker that will respond to less extreme but longer-term over-current conditions. So designed, Cutler-Hammer circuit breakers, including the MDL3800F protect conductors against overloads and conductors and connected apparatus, such as motors and motor starters, against short circuits.
All C Series Cutler Hammer Breakers are HACR-rated. The MDL3800F is available in a Line and Load lug-included version when there's an "L" at the end of the part number.
Cutler-Hammer Molded Case Circuit Breakers including the MDL3800F are designed to provide circuit protection for low voltage distribution protection for low voltage distribution systems. They are described by NEMA as, "a device for closing and interrupting a circuit between separable contacts under both normal and abnormal conditions," and furthermore as, ". . . a breaker assembled as an integral unit in a supporting and enclosing housing of insulating material." The NEC describes them as, "A device designed to open and close a circuit by non-automatic means, and to open the circuit automatically on a predetermined overload of current, without injury to itself when properly applied within its rating."
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