300-line magnetic motor starter
All these features plus an edge on productivity
The 300-line starter is a full voltage, magnetic motor starter with encapsulated coil and three-leg
block overload relay with visual trip indicator, manual reset and manual weld check.
It incorporates all the features and benefits users demand and has
received standard specification approval by many major manufacturers.
The 300-line is available in the following forms:
NEMA sizes 00–6
• Standard non-reversing
• Reversing
• Two-speed
• Combination
and in a wide selection of enclosures:
• Type 1 general purpose
• Type 3R rainproof, sleet-resistant
• Type 4 watertight, dust-tight
• Type 4X watertight, dust-tight, corrosion-resistant
• Type 12 driptight, dust-tight

300-line contactor
High performance with simplified maintenance
Several features combine to make the 300-line contactor a high-performance unit
that is easy to inspect and maintain.
• All line and load terminals on NEMA size 00. 0 and 1 starters can accommodate ring, spade
and stripped-wire terminations
• Tool-less disassembly for sizes 00–4
• Terminal numbering is permanently stamped
• NEMA size 00–1 terminals are staggered for easy termination
• In-line, stripped-wire connections are standard for NEMA size 2–6 starters
• Ring terminal options available for sizes 2–5
• Optional terminals available on NEMA size 1–4 starters to permit easy connection of power
factor correction capacitors for energy conservation
• NEMA size 1 starters and larger feature weld-resistant silver alloy contact tips
• Contacts have a wedge-shaped configuration for positive make with minimum bounce
• Size 00. 0 and 1 contacts can be easily changed from normally open to normally closed without
additional parts
• The magnet provides long life and is specially treated to resist rust
• Molded coil is impervious to moisture, dirt and oil and is highly resistant to mechanical damage and
high-humidity failure
• Retaining clips engage detents encapsulated in the coil to hold it securely in place
The 300-line contactor provides easy disassembly in sizes 00–6:
• Lift off the armature to allow quick inspection and ready access to contacts
• Pull the spring clip from the armature to access the coil
• No need to remove any wiring!
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