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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
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
10250T-SS Series operators have grounding
nibs4 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.
SPECIFICATIONS 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 Life: 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
† Todos los precios se muestran en EUR Notas: *Operators require contact blocks, sold separately. Ordering Example: (1) 10250T1311 2 position maintained selector switch, knob, €35.00 plus (1) 10250T2 Contact block, 2 normally open, €28.00, €35.00 + 28.00 = €63.00
22mm Pilot devices - Pushbuttons, Selector Switches and E-Stop Pilot Devices