







The SICK SAFETY RELAYS UE48-2OS2D2/2OS3D2/3OS2D2/3OS3D2 series represents a pinnacle of industrial safety technology, engineered to meet the most stringent global standards. These compact yet powerful relays are designed for emergency stop circuits, light curtains, and safety gates, providing up to three enabling current paths with SIL3/Category 4/PL e certification. Built for 20-year mission time and featuring electronic short-circuit protection, they deliver reliable, fail-safe operation in harsh automation environments. Whether you require 2 or 3 safety outputs, these models ensure seamless integration into your safety system with fixed screw terminals and low power consumption.
| Parameter | Specification (UE48-2OS2D2/2OS3D2/3OS2D2/3OS3D2) |
|---|---|
| Safety Integrity Level | SIL3 (IEC 61508), SILCL3 (EN 62061) |
| Category | Category 4 (EN ISO 13849) |
| Performance Level | PL e (EN ISO 13849) |
| B10d Parameter | 1.26 x 10⁶ switching cycles (AC-15, 230 V, I = 1.5 A) 5.9 x 10⁶ switching cycles (AC-15, 230 V, I = 0.75 A) 4.35 x 10⁵ switching cycles (DC-13, 24 V, I = 2.5 A) 1 x 10⁷ switching cycles (DC-13, 24 V, I = 0.63 A) |
| PFHD (Mean Probability of Dangerous Failure per Hour) | 3.0 x 10⁻⁸ (EN ISO 13849) |
| Mission Time (TM) | 20 years (EN ISO 13849) |
| Stop Category | 0 (EN 60204-1) |
| Connection Type | Fixed screw terminals |
| Number of Enabling Current Paths (N/O) | 2 (UE48-2OS2D2/2OS3D2) or 3 (UE48-3OS2D2/3OS3D2), relevant for safety |
| Residual Ripple | ≤ 2.4 Vpp |
| Power Consumption | ≤ 4.6 VA (AC models) / ≤ 2.1 W (DC models) |
| Overvoltage Category | II |
| Rated Insulation Voltage (Ui) | 300 V AC |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV |
| Test Voltage | 2 kV (50 Hz) (EN 60439-1) |
| Control Voltage | 22 V DC (≥ 17.4 V DC) |
| Control Current | 40 mA … 100 mA |
| Short-Circuit Current | ≤ 300 mA (between S33 / S11 and S21) |
| Short-Circuit Protection | Electronic fuse |
| Galvanic Decoupling | – (between A1, A2 and S11, S21, S33) |

What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22