USED SPRECHER+SCHUH CEF 1-12

The Sprecher+Schuh CEF 1-12 is a solid-state Electronic Motor Protection Relay designed for comprehensive motor protection in industrial applications. It provides thermal overload protection, single-phase and phase-unbalance protection, thermistor overtemperature protection, and overcurrent warning indication. Current settings are digitally adjusted via eight slide switches, with a built-in 20A base value and a full adjustable range of 0.5 to 180 amperes. This unit is part of the CEF1 series, which was scheduled for obsolescence by the manufacturer in 2006 and is considered a discontinued legacy product.
Specification
Value
Brand
Sprecher+Schuh
Model / Part Number
CEF 1-12
Product Type
Electronic Motor Protection Relay (Overload Relay)
Series
CEF1
Current Range
0.5 – 180 A
Base Current (built-in)
20 A
Rated Motor Circuit Voltage (UL & CSA)
600 VAC
Control Circuit Max Voltage
440 VAC
Supply Voltage – AC (50/60 Hz)
24, 36, 48, 110, 220, 240, 380, 415, or 440 VAC
Supply Voltage – DC
24 VDC or 48 VDC
Power Consumption
AC: 2.5 VA (2 W) / DC: 2 W
Max Total Power Loss (CEF1-12)
AC: 4.5 VA (4 W) / DC: 4 W
Frequency
50/60 Hz
Number of Phases
3
Protection Functions
Thermal Overload, Phase Failure, Phase Unbalance, Thermistor Overtemperature, Overcurrent Warning
Overcurrent Warning Threshold
110% of set FLA (red LED flashes)
Current Setting Method
8 digital slide switches
Reset Type
Manual (push button); Remote reset optional via CER1 module; Automatic reset available for thermal overload & thermistor functions
Output Relay Operation
Energized during normal operation; de-energizes on fault (fail-safe, closed circuit)
Degree of Inertia
Adjustable (selectable trip time)
Fault Indication
Individual LEDs (red = fault, green = ready/power on)
Mounting
Panel mount; DIN rail (EN 50022-35) via optional adapter
Dimensions (H x W x D)
120 mm x 100 mm x 143 mm (approx., CEF1-11/12)
Weight
2.40 lbs (approx.)
Technology
Solid State (Electronic)
Manufacturer Status
Discontinued / Obsolete
Standards
UL, CSA
We warranty all items for 30 days from date of purchase.