Strong Points
Function
The RESYS M40 differential relay is combined with a triggered cut-off device (automatic power cut-off), to meet the following functions:
- Protect against indirect contact.
- Limit earth leakage currents.
It also ensures the preventive monitoring of electrical installations with its pre-alarm function (configurable) or when used in signalling relays.
Conformity to standards
IEC 60755
IEC 60947-2
IEC 60664
IEC 61543 A1
References
RESYS M40 is available in X versions
| Item | Type | Control voltage | Tripping threshold | Time setting | Select |
|---|---|---|---|---|---|
| 49413723 | RESYS M40 v2 | 115/230 VAC | 30 mA .. 30 A | 0..10 s | |
| 49413740 | RESYS M40 v2 | 400 VAC | 30 mA .. 30 A | 0..10 s | |
| 49413602 | RESYS M40 v2 | 12-125 VDC | 30 mA .. 30 A | 0..10 s | |
| 49413601 | RESYS M40 v2 | 12-60 VDC | 30 mA .. 30 A | 0..10 s |
Advantages
Fully configurable
- 2 relays with configurable function (alarm or pre-alarm at 50% IΔn).
- Adjustment of IΔn from 0.03 to 30 A.
- Time delay 0 to 10 s.
- Positive or negative security configurable by the user.
- Selection of toroid ratio.
Trigger accuracy by way of TRMS monitoring
Improves immunity to untimely triggers.
Real-time display of continuous leakage currents
LED bargraph shows the fluctuations of leakage currents in realtime.
Compact modular design
44 mm in width, the unit allows easy integration into dedicated enclosures. The setting buttons are protected by a sealable cover, while the available alarms are shown on the front face of the device.
Improved immunity to EMC interferences
The device has new electronics which improve electromagnetic compatibility.
