Heavy-Duty 30.5mm Metal Selector Switches

10250T-SS Series Selector Switches

Selector Switches, Heavy Duty 30mm 2-way Selector Switches | 10250T-SS Series Selector Switches

Selector Switches, Heavy Duty 30mm 2-way Selector Switches

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  • Heavy-Duty Zinc Die Cast Construction
  • Enclosed Silver Contacts with Reliability Nibs
  • Diaphragm Seals with Drainage Holes
  • Grounding Nibs on Operator Casing
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The 30.5 mm selector switches features a zinc die cast construction with chrome-plated housing and mounting nut.

The contact blocks feature enclosed silver contacts with pointed "reliability nibs" for reliable performance from logic level up to 600V. To ensure reliable switching, nibs bite through oxide which can form on silver contacts, eliminating the need for expensive logic level blocks for most applications.

Reliability nibs improve performance in dry circuit, corrosive, fine dust and other contaminated atmospheres.

Under normal environmental conditions, the minimum operational voltage is 5V and the minimum operational current is 1 mA, AC/DC. For operation under a wider range of environmental conditions, logic level contact blocks with inert palladium tipped contacts are recommended.

10250T-SS Series operators have grounding nibs–4 metal points on the operator casting designed to bite through most paints and other coatings on metal panels to enhance the ground connection when the operator is securely tightened.

Omega’s selector switch operators offer front of panel drainage via holes in the operator bushing. Hidden from view by the mounting nut, these holes prevent buildup of liquid inside the operator, which can prevent operation in freezing environments. The holes also provide a route for escaping liquid in high pressure washdowns, effectively relieving pressure from the internal diaphragm seal. This ensures reliable sealing in applications even beyond NEMA 4.

Standards and Certifications: CE EN60947-5-1
    UL 508: File No. 131568
    CSA C22.2 No. 14: File No. LR68551
Ingress Protection (When Mounted inSimilarly Rated Enclosure):
    Standard Indicating Lights: UL (NEMA) Type 1, 2, 3, 3R, 3S, 4, 4X, 12, 13; IEC IP65
    All Other Operators: UL (NEMA) Type 1, 2, 3, 3R, 4, 4X, 12, 13; IEC IP65

Frequency of Operation:

    Key and Lever Selector Switches: 3000 operations per hr
    Contact Blocks: 10,000,000 operations
    Lever and Key Selector Switches: 250,000 operations
    Shock Resistance Duration: 20 mS ≥ 5g
Climate Conditions:
    Operating Temperature: -17 to 66°C (1 to 150°F)
    Storage Temperature: -40 to 80°C (-40 to 176°F)
    Altitude: 2000 m (6562')
     Terminals: Marking; NC-NO on the contact block to meet the NEMA requirements; dual marking system 1 to 2 for normally closed, 3 to 4 for normally open to meet BS5472 (Cenelec EN50 005)
Clamps: Terminals are saddle clamp type for 1 x 22 AWG (0.34 mm2) to 2 x 14 AWG (2.5 mm2) conductors; torque = 7 lb-in (0.8 Nm) Degree of Protection Against Direct
Electrical Contact: IP2X with fingerproof shroud
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