Series 300, Industrial Automatic & Manual Transfer Switches, Industrial Automatic & Manual Transfer Switches, Enclosed, Open with Open, Closed and Delayed Transitions
ASTR-300 (327)
30 to 3,000 Amp, Indoor, Outdoor, Explosion Proof, Stainless and Accessories, 100, 200, 230 & 400 Amp, Indoor & Outdoor, Light Duty, >>>>Order online or call PowerPixie @ 707 542-2224 to take your order. GSA Pricing Available.
ASCO Series 300 Transfer Switch Group - Automatic Transfer Switches - Enclosed & Open
As the world leader in emergency and standby power transfer solutions, ASCO keeps your power on. ASCO Automatic Transfer Switches and Power Systems safeguard data and telecommunications networks, industrial processes and critical installations from health care facilities to financial transaction centers.
Over the past 70 years, ASCO has pioneered every major product innovation in power transfer technology. ASCO is committed to providing a full range of quality-driven products, backed by 24-hour nationwide service support.
ASCO Series 300 Enclosed- ASCO Series 300 automatic transfer switches are suitable for emergency and standby power system applications.
ASCO Series 300 Open - ASCO Series 300 automatic transfer switches are suitable for emergency and standby power system applications. These units are identical to Series 300 enclosed but do not have front covers or doors. This Series is designed to be installed inside rack systems or other enclosures and will not meet electrical or UL codes if installed standing alone.
Sizes 30 through 3000 amps in a compact design with 2, 3, & 4 pole configurations. Available 120 to 600 VAC. UL 1008 listed to 480 VAC for total system loads. True double-throw, inherently interlocked construction to absolutely prohibit connecting both sources together. Mechanically held, electrically operated utilizing a reliable, field-proven single solenoid operator. Contacts easily accessible for easy inspection and preventive maintenance. Meets National Electric Code requirements (U.S.). Rated for emergency and standby applications.
Standard models in stock dropped shipped to your location. FREE SHIPPING with purchase of a generator at the same time.
Available in Type 1 and 3R enclosures 30 through 3000 amps. Type 1, 3R, 4 and 12 from 30 to 1600 amps, (some exceptions).
A programmable engine exerciser that provides for weekly or biweekly operation, includes one form C contact for source availability of normal and emergency (contact rating 2 amps @ 30Vdc, 0.5 amp. @ 125 VAC resistive). The programmable engine exerciser incorporates a 7 day or 14 day time base with a digital readout display. Includes "with or without" load control switch for exerciser period.
K601111
(field install)
Deluxe Engine Exerciser Kit (includes Acc 300-5308). Field installable kit.
14AA/A4BA
ATS position indicating contacts, (2) for Normal, (2) for Emergency
Transfer to emergency alarm horn & silence switch (City of Chicago)*
44A
Strip heater w/ thermostat, external 120 volt power source required. Strip Heater with thermostat for extremely cold areas to prevent condensation and freezing of this condensation. External 120 volt power source required.
44G
Strip heater w/ thermostat, wired to load terminals: 208-240, 360-380, 460-480, 550-600 volts. Contains wiring harnesses for all transfer switch sizes.
K613127-001
Strip Heater Kit, (125 watts) 120 volt (Acc. 44A)
K613127-002
Strip Heater. Kit (125 watts) 208- 600 volt (Acc. 44G)
K609027
Cable Pull Box (1600-2000 amp)
The packages shown below are the most common combinations of options. Each package includes only the options listed.
Also see Included Equipment above.
If you want a Package deal but need additional options, select the options in the drop down windows above, then check the box "Option Only", Click the Product BUY button and then Click the "Package" BUY button next. You can also select all the options you want and just click the product BUY button and select your custom configuration.
Purchase option only
Standard Features
Series 300, Industrial Automatic & Manual Transfer Switches, Industrial Automatic & Manual Transfer Switches, Enclosed, Open with Open, Closed and Delayed Transitions
Close differential 3 phase under-voltage sensing of Source1 (normal) - factory standard setting 90% pickup, 80% dropout (adjustable); under-frequency sensing of Source 1 factory setting 95% pickup (adjustable).
Contact transfer speed less than 100 milliseconds
eTemperature rise test per UL 1008 conducted after overload and endurance tests in unventilated enclosure-exceeds UL requirements
High close-in and withstand capability
NEMA Type 1 enclosure is standard. Also available in NEMA 3R, 4, 4X & 12.
Voltage and frequency sensing of the Source 2 (emergency) - factory standard setting 90% pickup voltage, 95% pickup frequency (adjustable).
Indicating LEDs for source availability and switch position.
Pushbuttons for test, exerciser set, timer bypass and program cancel.
Special status annunciation of in-phase transfer and timer operation.
Selectable 7, 14, 21 or 28 day (factory set 28 dsays) generator (source2) with or without load exerciser timer.
Diagnostic LED indications in logical one-line configuration.
Auxiliary contacts (1 each) cclosed in Source 1 (normal) and Source 2 (emergency positions.
Close differential under-voltage sensing of the normal source.
Voltage and frequency sensing of the emergency source.
Test switch (fast test/load/no load) to simulate normal source failure - automatically bypassed should the emergency source fail .
Double throw, interlocked operation .
Electrically operated, mechanically held by a simple, over-center mechanism.
Segmented silver tungsten alloy contacts with separate arcing contacts on 600 amps and above.
Arc quenching grids, enclosed arc chambers and wide contact air gap for superior source-to-source isolation on all units.
Control circuit disconnect plug and drive inhibit switch for safe maintenance.
Components accessible for inspection and maintenance without removal of the switch or the power conductors.
Mechanical indicator and contact chamber cover designed for inspection, safety and position designation.
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Series 300
