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Overload relay ISKRA BR30
Thermal overload relay BR30
Area: 29-36A
Item No. 4036.7388
Features
- According to IEC/EN 60947-4-1, IEC60947-5-1; UL508
- 3-pole overload relay
- Protection for motors up to 38A operating current and 690V operating voltage
- Electrically isolated auxiliary contacts (1 normally closed, 1 normally open)
- Selectable manual or automatic reset
- Phase failure sensitivity according to IEC/EN 60947-4-1
- Temperature compensation
- UL approval
Versions
| Item No. | Manufacturer ID | Delivery Time | Stock | Quantities / Prices |
|---|---|---|---|---|
| 4036.7388 | 786.050.504 | 1 day(s) | 14 |
Technical Features
Series Specifications
Rated operating voltage Ue
690V
Surge voltage withstand strength Uimp
6kV
Permissible operating temperature
-5°C ... +55°C
Protection class
IP20
Installation position
Arbitrary
Fastening
Hooking onto the contactor, securing with screws in the main connection terminals.
Terminal connections
Terminal blocks
Connection cross-sections
2x 1.0 - 10 sqmm (fine-stranded with AEH)
Connection cross-sections auxiliary contacts
2x 0.75-2.5 mm² (fine-stranded with AEH)
Trigger class
10
Switching frequency
Up to 15 circuits/h or 60 circuits/h with 40%.
Individual Parameters
Adjustment range (A)
29.0...36.0A
Max. backup fuse gL/gG (A)
60
power loss
5...6.5 W
Manufacturer
Iskra, d.d.o., Stegne 21, SI - 1000 Ljubljana
Settings and notes - see also "More images".
Warning:
Insufficiently tightened clamping screws can lead to unacceptable heating. The device may only be connected by qualified personnel. Do not touch live parts!
Startup Verification:
Press the "O" push button to reset the relay. By pressing the slider "2" in the direction of the arrow, the device will activate. The contact 95-96 opens, and the contact 97-98 closes. In the off state, the switching position indicator shows "1" in yellow.
Setting to Motor Rated Current:
The setting to motor rated current is done by turning the setting knob (3) until the point of the knob is at the desired rated current value.
Switching from Manual to Automatic Reset:
Manual Reset:
The triggered overload protection is reset with the "R" button (4). Please ensure sufficient cooling time.
Automatic Reset:
Press and hold the "R" button (4) while moving the slider (5) in the direction of the arrow until it clicks into place. After releasing the slider, the "R" button (4) must remain pressed.
Auxiliary Switch:
Open contact 95-96 and closed contact 97-98 are galvanically separated. Short-circuit protection of the auxiliary switch 6A. The closed auxiliary contact 97-98 can activate a signaling circuit. A single-pole changeover contact can be achieved by inserting a bridge between terminals 95 and 97.