Selection Guide

16
CONTROL
PRODUCTS
Siemens / Speedfax Previous folio: 16-48, 10IC 8-48
Overload Relays
Solid State ESP200, Class 48, 958 and 958L General
Siemens Power Distribution & Control, SPEEDFAX™ 2007-2008 Product Catalog
16-48
NEMA & General
Purpose Control
Features Benefits
▪
Trip Classes - 5, 10, 20, or 30 Selectable by DIP-switches
▪
Field changeable reduces time and inventory. Suitable for
light, normal and heavy starting conditions
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Phase Loss Protection - Trips in less than 3 Seconds
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Protects motor burn out and minimizes motor heating up
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Phase Unbalance - Trips based on Trip Class selected
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Minimizes temperature rise of the motor on a asymmetrical
three-phase-system
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Ground Fault - Trips 60% of Motor Current
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Provides optimum system protection of motors against
high-resistance short-circuits or ground faults due to moisture,
condensation, damage of insulation or any other reason
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Trip Indicator - Visible
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Save time, faster to identify overload Trip
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Ambient Insensitive
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Prevents nuisance tripping
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No Heaters Required
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Saves cost and eliminates time for installation of heaters
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Self-Powered - No outside source required
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Reduce cost for external power supply
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FLA dial with wide Adjustment - 4:1 ratio
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Provides wide range, reduces inventory
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Self Protected in short circuit condition (when used with
proper fuses or motor starter protector)
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Unlike bimetal overloads, this eliminates replacement of the
overload heaters after short circuit
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Test Button - Tests Electronics
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Tests the complete electronic functions including the trip
mechanism. Increases up time
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Thermal Memory
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Prevents re-starting motor when it is still hot
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Conformally coated circuit board
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Resists against environmental conditions
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1 NO and 1NC Contacts Standard. B600, R300
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Makes it easier for user to wire local contacts
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Operating Temperature: -25 °C - 65 °C
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Wide operating temperature range prevents nuisance tripping
with temperature changes
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Repeat Accuracy <1%.
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For more precise settings and reduced nuisance tripping
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Removable Terminal Block
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Terminal Block can be removed without removing wires.
Saves time for replacements
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Automatic reset
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Auto. Reset is 3 minutes after tripping, allowing motor to
cool down before re-start. If Manual Reset is selected,
overload can be reset immediately
▪
Remote reset
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As an alternative to the mechanical RESET options, an
electrical remote RESET can be used by applying 24 V DC
to terminals A3 and A4
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DIN Rail Mounted
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Reduces installation time
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Touch - Safe Terminals
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Protects against accidental touching of live circuits
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UL listed CSA certified
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Third party approval standard
Sect_16a_Speedfax2007 10/6/09 2:27 PM Page 16-48