| Intended Application |
Residential
Light Commercial |
Commercial
Light Industrial |
Industrial |
Mission Critical
Critical Power |
| Ampere sizes available |
100 - 400 |
30 - 3,000 |
30 - 4,000 |
30 - 4,000 |
| Phases Available |
Single |
Single or Three |
Single or Three |
Single or Three |
| Pole Counts Available |
2 |
2, 3 or 4 |
2, 3 or 4 |
2, 3 or 4 |
| Low Voltage |
220 - 240V |
115 - 600V |
115 - 600V |
115 - 600V |
| Medium Voltage |
N/A |
N/A |
N/A |
5kV, 15kV |
| Open Transition Transfer Switch |
Yes |
Yes |
Yes |
Yes |
| Service Entrance Rated Transfer Switch |
Yes |
Yes |
Yes |
Yes |
| Power Transfer Load Center |
Yes |
Yes |
N/A |
Yes |
| Closed-Transition Transfer Switch |
N/A |
N/A |
Yes |
Yes |
| Delayed-Transition Transfer Switch |
N/A |
N/A |
Yes |
Yes |
| Soft Load Transfer |
N/A |
N/A |
N/A |
Yes |
| Bypass-Isolation transfer Switch |
N/A |
N/A |
N/A |
Yes |
| Closed-Transition Bypass-Isolation TS |
N/A |
N/A |
N/A |
Yes |
| Delayed-Transition Bypass-Isolation TS |
N/A |
N/A |
N/A |
Yes |
| Soft Load Bypass-Isolation TS |
N/A |
N/A |
N/A |
Yes |
| WCR when used with any circuit breaker |
N/A |
N/A |
10-100kA |
10-100kA |
| WCR when used with specific circuit breakers |
10kA - 35kA |
22-100kA |
22-100kA |
22-100kA |
| WCR when used with current limiting fuses |
100-200kA |
100-200kA |
100-200kA |
100-200kA |
| Withstand Short Time Rating |
N/A |
N/A |
36-65kA |
36-65kA |
| Solid |
Std. |
Std. |
Yes |
Yes |
| Switched |
N/A |
Yes |
Yes |
Yes |
| Overlapped |
N/A |
N/A |
N/A |
Yes |
| Phase Selection |
Single Phase |
Single or Three Phase |
Single or Three Phase |
Single or Three Phase |
| Pick up Normal Source Voltage |
198 Volts |
90% or 95% |
85 to 100% |
85 to 100% |
| Drop out Normal Source Voltage |
154-187 Volts |
70% to 90% |
70 to 98% |
70 to 98% |
| Pick up Emergency Source Voltage |
198 Volts |
90% Fixed |
85 to 100% |
85 to 100% |
| Drop out Emergency Source Voltage |
165 Volts |
75% Fixed |
70 to 98% |
70 to 98% |
| Frequency |
50 or 60 Hz |
50 or 60 Hz |
50 or 60 Hz |
50 or 60 Hz |
| Pick up Emergency Source Frequency |
48 or 57 Hz |
95% Fixed |
90 to 100% |
90 to 100% |
| Drop out Emergency Source Frequency |
43 or 51 Hz |
85% Fixed |
85 to 98% |
85 to 98% |
| Normal Over Voltage Trip |
N/A |
N/A |
102 to 115% |
102 to 115% |
| Emergency Over Voltage Trip |
N/A |
N/A |
102 to 115% |
102 to 115% |
| Normal Over Frequency Trip |
N/A |
N/A |
102 to 110% |
102 to 110% |
| Emergency Over Frequency Trip |
N/A |
N/A |
102 to 110% |
102 to 110% |
| Pick up Normal Source Frequency |
N/A |
N/A |
90 to 100% |
90 to 100% |
| Drop out Normal Source Frequency |
N/A |
N/A |
85 to 98% |
85 to 98% |
| Normal & Emergency Voltage Unbalance |
N/A |
N/A |
Yes |
Yes |
| Override Normal Source Momentary Outage |
1 or 3 Seconds |
1 or 3 Seconds |
0 to 6 Seconds |
0 to 6 Seconds |
| Transfer to Emergency |
10 Seconds |
0 to 5 Minutes |
0 to 60 Minutes |
0 to 60 Minutes |
| Re-transfer to Normal Utility Power Loss Mode |
5 Minutes |
1 Sec. to 30 Mins. |
0 to 60 Minutes |
0 to 60 Minutes |
| Engine Cool Down |
2 or 5 Minutes |
5 Minutes |
0 to 60 Minutes |
0 to 60 Minutes |
| Override Emergency Source Momentary Outage |
4 Seconds |
4 Seconds |
0 to 60 Minutes |
0 to 60 Minutes |
| Emergency Exerciser |
7 Day |
7 Day |
Programmable |
Programmable |
| Load Connected to Normal |
Yes |
Yes |
Yes |
Yes |
| Load Connected to Emergency |
Yes |
Yes |
Yes |
Yes |
| Normal Source Available |
Yes |
Yes |
Yes |
Yes |
| Emergency Source Available |
Yes |
Yes |
Yes |
Yes |
| Transfer Test Switch |
Yes |
Yes |
Yes |
Yes |
| Terminals for Remote Transfer Control |
Std. |
Std. |
Std. |
Std. |
| By-pass Time Delay |
Yes |
Yes |
Yes |
Yes |
| Transfer Inhibit |
N/A |
Yes |
Yes |
Yes |
| In-Phase Monitor |
N/A |
Yes |
Yes |
Yes |
| Load Disconnect Contacts with Time Delay |
N/A |
Std. |
Optional |
Optional |
| Event Log |
N/A |
N/A |
Yes |
Yes |
| Power Manager |
N/A |
N/A |
Optional |
Optional |
| Transfer Controls Lock Out |
N/A |
N/A |
Yes |
Optional |
| Type 1 |
Yes |
Yes |
Yes |
Yes |
| Type 3R |
Yes |
Yes |
Yes |
Yes |
| Type 4 |
N/A |
Yes |
Yes |
Yes |
| Type 4X |
N/A |
Yes |
Yes |
Yes |
| Type 12 |
N/A |
Yes |
Yes |
Yes |
| RS-485 Serial |
N/A |
Yes |
Yes |
Yes |
| Ethernet |
Yes |
Yes |
Yes |
Yes |
| Modbus® |
N/A |
N/A |
Yes |
Yes |
| Monitoring and Control via ASCO® Products |
Yes |
Yes |
Yes |
Yes |
| Optional Accessories |
Field Kits Only |
Limited |
Limited |
Extensive |
