63A 4-Pole Lockable Rotary Isolator, 64x64mm Front
The EMAS PSA063AK441E is a 63A, 4-pole rotary cam isolator for panel-door or front-plate mounting, with a red/yellow safety handle that can be padlocked in the OFF position. It is the right choice for three-phase equipment where the neutral must be switched with the three lines (3P+N), or for isolating two single-phase circuits together, giving a clear 0-1 switching position with a positive 90° throw. Typical loads are main incomers on machine panels, large heaters and high-current process equipment.
MPN PSA063AK441E
- 63A, 4 poles - AC21A rating at up to 690V insulation voltage
- Padlockable safety handle - red/yellow handle locks off in the 0 position before maintenance
- 64x64mm front plate - built to TS EN 60947-3, 6kA short-circuit breaking capacity (Ics)
- Surface-mount option - fit it into an EMAS IP65 PSK enclosure (PSK31E or PSK32E, 50-63A) for a wall-mounted isolator
Downloads: EMAS PSA063AK441E datasheet (PDF)
Technical Details
Frequently Asked Questions
Can it be locked off for maintenance?
Yes. The red/yellow safety handle can be padlocked in the OFF (0) position, so the isolator can form part of a lockout-tagout procedure.
Should I choose 3 poles or 4 poles?
Use a 3-pole isolator where only the three phase conductors need breaking. Choose 4 poles when your installation requires the neutral to be switched as well (3P+N). This is the 4-pole version; the PSA063AK341E is the 3-pole 63A alternative.
Can I mount it on a wall instead of a panel door?
Yes. Fit it into the matching EMAS IP65 surface enclosure, PSK31E or PSK32E, 50-63A, to make a self-contained wall-mounted isolator.
Is it suitable for switching motors directly?
It is rated AC21A, which covers resistive and slightly inductive loads at full current. Use it as an isolator for motor circuits, with a contactor or motor protection switch doing the on-load starting and overload protection.
Industry Applications
- Machine isolation - a lockable local isolator on machine tools, pumps and conveyors
- Panel builders and OEMs - compact 64x64mm door-mounted isolator for control panels
- Heating and process plant - safe isolation of heater banks and process equipment before maintenance
Need a different rating? See the EMAS PSA016AK241E (16A 2-pole) or PSA032AK441E (32A).