UL1077 Rated Supplementary Protector BreakersProducts | Control Panel Hardware & Tools | Industrial Fuses, holders and Circuit Breakers (MCBs and MCCBs) | UL1077 Rated Supplementary Protector Breakers  Supplementary Protectors (Circuit Breakers)
Terminal Block Supplementary Circuit Breakers ... New!
DN-FE series terminal block sockets accept circuit disconnects or supplementary protectors. The DN-FE blocks are available either with or without a trip indicating LED.
- DN-SUPP-xx - EURO series mini single-pole UL1077 supplementary protectors, 0.25A to 10A rated current versions. UL, CSA and VDE agency approvals
- DN-DIS-BLADE - circuit disconnect, use instead of SUPP for DN-FE, or as replacement blade for DN-DIS
WMS Series Supplementary Protector Breakers
Cutler-Hammer™ protector breakers by Eaton Corporation are standard supplementary protector breakers, recognized by UL and CSA under UL 1077 and CSA 22.2. They are CE marked in accordance with Low Voltage Directive (LVD) (73/23/EEC).
These supplementary protectors are used to provide overcurrent protection where branch protection (for example, UL 489 MCCB) is already provided or not required. The units can be installed as a component within or part of an appliance or a piece of electrical equipment.
They are ideal replacements for fuses that are applied as a supplementary protector, i.e. in addition to branch protection (if required). They are 35 mm DIN-rail mountable, utilizing a metallic “extra strength” spring clip.
Applications
These supplementary protectors are to be applied in conjunction with a branch protector (if branch protection is required) and can be a replacement for similarly applied fuses. The advantage over fuses is that these devices are resettable and the status is easily and clearly identified by the position of the handle and the flag indicator. These supplementary protectors provide a wide range of current ratings from 0.5 to 60 amperes and three different overcurrent characteristic curves: B, C and D. You can select a device that provides maximum reliability and accuracy to fit various applications. With 35 mm DIN-rail mounting and “Quick 3 Step” field mountable accessories, it is easy for you to select and apply these supplementary protectors. Cutler-Hammer WMS Series Supplementary Protector Breakers are ideal for providing protection in a multitude of applications, including: Control power transformers, Relays, Contactor coils, Lighting circuits.
Features
- Current limiting design provides fast short circuit interruption that reduces the let-through energy which can damage the circuit.
- Thermal Magnetic Overcurrent Protection: Two levels, categorized by B, C and D curves. In direct relation to continuous rating of the device
- B Curve Trip - 3 to 5 X rated current, Suited for applications where maxmum protection is required for control circuits from low level short circuit faults that could damage the wiring.
- C Curve Trip - 5 to 10 X rated current, Typically used for control circuits
- D curve Trip - 10 to 20 X rated current, Provides a magnetic range to allow for higher inrush levels during startup, that are usually seen with transformers and other high inductive systems.
- Color coded status indicator window: Red = ON or Green = OFF
- P20 Finger Protection
- Provision for Dual Connection - line and load:
- Cable direct into terminal
- Cable utilizing Ring Tung connector
- 35 mm DIN-rail mountable, utilizing “extra strength” spring clip.
- Field Mountable Accessories
- No Tools Required!
- Auxiliary switch, shunt trip, combined auxiliary switch and trip alarm switch
- easy mounting on a 35 mm DIN-rail
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