Thermal overload relays with bimetals are economical electromechanical protection devices for the main circuit. They provide reliable motor protection in the event of an overload or phase failure.

Thermal Overload Relays and Overload Relays are electromechanical protection devices for the main circuit. They offer reliable motor protection in the event of an overload or phase loss.

Features:

• Abb Series
• Rated operating voltage auxiliary circuit 600 Vac/dc - Main circuit 690 Vac - Main circuit 600 Vdc
• Rated operating current (Ie) 4.2 A
• Rated operating current AC-3 (Ie) 4.2 A
• Rated frequency auxiliary circuit 50 Hz - Auxiliary circuit 60 Hz - DC auxiliary circuit - Main circuit 50 Hz - Main circuit 60 Hz
• Rated impulse withstand voltage (Uimp) auxiliary circuit 6 kV - main circuit 6 kV
• Rated insulation voltage (Ui) 690 V
• Setting range 3.1 ... 4.2 A
• 3 poles
• Degree of protection IP20
• Pollution degree 3
• Tightening torque auxiliary circuit 1 ... 1.5 Nm - main circuit 1.5...2.5 Nm
• Insulation stripping length auxiliary circuit 9 mm - main circuit 12 mm
• Recommended screwdriver main circuit Pozidriv 2
• Power loss at nominal operating conditions per pole 1.1 W
• Ambient temperature in operation -25..+60 °C - Operation Compensated -25...+60 °C - in storage -50..+80 °C
• Ambient air temperature compensation Yes
• Shock resistance according to IEC 60068-2-27 11 ms Pulse 25g
• Max. permissible operating altitude 2000 m
• Conventional free air thermal current (Ith) auxiliary circuit NC 6 A - auxiliary circuit NO 4 A
• Vibration resistance according to IEC 60068-2-6: 5g / 3 ... 150 Hz
• Auxiliary circuit-cable cross-sections:
• Flexible with ferrule 1/2x 0.75 ... 2.5 mm² Flexible with insulated ferrule
• Flexible with insulated ferrule 1x 0.75 ... 2.5 mm² Flexible with insulated ferrule
• Flexible with insulated ferrule 2x 0.75 ... 1.5 mm² Flexible with Insulated Ferrule
• Flexible 1/2x 0.75 ... 1 mm
• Flexible 1/2x 1 ... 2.5 mm² Flexible
• Rigid 1/2x 0.75 ... 4 mm²
• Cable cross-sections - main circuit
• Flexible with Ferrule 1/2x 0.75 ... 4 mm² Flexible with Insulated
• Flexible with Insulated Ferrule 1/2x 0.75 ... 4 mm² cable cross-sections
• Flexible 1/2x 0.75 ... 4 mm² Rigid
• Rigid 1/2x 0.75 ... 4 mm²

Rated operational current AC-15 (Ie):

• (120 V) NC 3 A
• (120 V) NO 0.5 A
• (240 V) NC 3 A
• (240V) NO 0.5 A
• (400V) NC 0.75 A
• (400V) NO 0.5 A
• (500V) DC 0.75 A
• (500V) NO 0.5A

Rated operating current DC-13 (Ie):

• (125 V) NC 0.55 A
• (125V) NO 0.55A
• (24 V) NC 1.25 A
• (24 V) NO 1.25 A
• (250V) NC 0.27A
• (250V) NO 0.27A
• (500V) NC 0.15 A
• (500V) NO 0.15A
• (60V) NC 0.55 A
• (60 V) NO 0.55 A
• Width 45 mm
• Height 88.3 mm
• Depth 70.5 mm
• Net Weight 0.13 kg