STANDARD ED520
EMERGENCY DISCONNECT
The ED520 range of switches have been designed to provide a rapid means of disconnecting batteries or other power supplies in the event of serious electrical faults. Whilst the switches are primarily intended for use with battery powered vehicles they are also suitable for use with static power systems. All types are capable of safely rupturing full load battery currents in the event of an emergency.
The ED520 is a manually operated device with a snap action for both opening and closing of the main contacts. The ED520 is easy to install and can be mounted using the main terminal busbars or secured with supplied M5 posidrive mounting screws on the frame of the device.
Precautions:
The switch is to be used to rupture current in an emergency or as a no-load isolator.
Do not use as a regular On-Load Switching Device.
ED520 Technical Information
| Application | ||
| Thermal Current Rating | - | 500A |
| Intermittent Current Rating: | ||
| 30% Duty | - | 915A |
| 40% Duty | - | 790A |
| 50% Duty | - | 705A |
| 60% Duty | - | 645A |
| 70% Duty | - | 600A |
| Rated Fault Current Breaking Capacity (Icn) 5ms Time Constant: (In accordance with UL583*) | ||
| Blowouts | - | |
| No Blowouts | - | |
| Rated Fault Current Breaking Capacity (Icn) Resistive Load: (In accordance with UL508*) | ||
| Blowouts | - | |
| No Blowouts | 750A at 60V D.C. | |
| Maximum Recommended Contact Voltages | ||
| Blowouts | - | - |
| No Blowouts | - | 60V |
| Typical Voltage Drop per pole across New Contacts at 500A | 50mV | |
| Mechanical Durability | > 10,000 Cycles | |
| Coil Voltage Available (Us) (Rectifier board required for A.C.) | 0 - 0V | |
ED520 Features
| Component | Configurations |
|---|---|
| Auxiliary |
STANDARD |
| Mounting Options |
 M5 Tapped Holes |