Power class: 4 A to 25 A
Series: Y6

  • Three-pole (normally closed) for three phase AC current use in the star point
  • resets automatically
  • with epoxy
  • Mylar®-Nomex®
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Thermal protectors SY6Thermal protectors SY6

Technical specifications

Nominal switching temperature (NST) in 5 °C 70 °C - 200 °C
Tolerance (standard) ±5 K
Reverse switch temperature (RST) below NST UL - 35 K ± 15 K (≤ 95° C NST)
Reverse switch temperature (RST) below NST VDE ≥ 35 °C
Installation height from 6.7 mm
Diameter 9.4 mm
Length of the insulation cap 16.0 mm
Resistance to impregnation suitable
Suitable for installation in protection class I + II
Pressure resistance to the switch housing600 N
Standard connectionLead wire 0.5 mm² / AWG20
Operating voltage range ACup until 440 V AC
Rated voltage AC3x 400 V 50/60 Hz
Rated current AC cos ϕ = 1.0/cycles2.5 A / 10,000
Max. switching current AC cos ϕ = 1.0/cycles6.3 A / 3,000
High voltage resistance2.0 kV
Total bounce time< 1 ms
Contact resistance (according to MIL-STD. R5757)≤ 50 mΩ
Vibration resistance at 10 ... 60 Hz100 m/s²


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