MENNEKES STF Series of Fusible Disconnect Switches are UL 98 Listed Enclosed Switches. Units provide superior short circuit protection of 200kAIC with installed Type J Fuses and are rated up to 30hp @ 3Ø480Vac.

The NEMA 4X; 12 rated stainless steel enclosure has a 180° Swing Door for convenient access to interior. Switches feature removable fuse holders for ease of service and Touch Safe Wire Terminals for added protection. STF switches are a rugged and economical alternative to traditional stainless steel knife blade safety switches.

• Switch - Self-cleaning contacts are driven by solid bridge bar to prevent single phasing. Quick-Make/Quick-Break action provides long electrical life. Positive opening operation protects personnel from welded contacts.
• Fuse Isolation - Contacts on both sides of fuses provide full isolation in "OFF" position to reduce risk of electric shock, even if switch is back fed.
• Removable Fuse Holders - Allow for install and replacement of fuse away from interior of unit. Standard offering for Type J Fuses. (Type CC also available in 30A)
• Padlockable Handle with Door Interlock - Can be locked with up to 3 padlocks for OSHA LO/TO requirements. Interlock feature prevents opening door in "ON" position and when locked in "OFF" position.
• NEMA 4X Enclosure - Seamless gasket provides watertight and dust-tight seal. 16 gauge Type 304 stainless steel protects against impact and corrosive environments. Standardized enclosure size for 30A and 60A units.
• Auxiliary Contacts - Full range available in N/O and N/C style.

• Switch: Listed Standard 98. Suitable as Branch Circuit Protective Device per NEC Article 430-109(a)(6).
• Environmental: NEMA Type 4X; 12
• UV Resistance: Handle MAterial is UV stabilized
• Continuous Operation Temperature: -40° to +60°C
• UL Endurance Test:
  6,000 Electrical Cycles
  10,000 Mechanical Cycles
• UL Short Circuit Rating:
  200,000 RMS Symmetrical Amperes with Type J Fuses

1. DIN Rail Mounted Switch - Allows for easy removal during initial installation.
2. Built-In Fuse Holders - Fuse replacement is made away from circuit.
3. Auxiliary Contact Provision Area - Location for installation does not reduce wire space.
4. Switch - Finger Proof Design with terminal shrouds reduces risk of touching live parts.
5. Ground Block Terminal provided standard.
6. Seamless Gasket provides a long lasting NEMA 4X Seal.