Prosafe Trapped Key Interlock Switches Electronic Timed-Delay Units Specifications Standards Category Approvals Description The Electronic Timed-delay Unit (ETU) is used in applications that require an elapsed time to occur before allowing access to a hazardous area. The ETU uses a CU1 control unit timer to execute the timing sequence. Turning a non removable key initiates the timer. When the CU1 times out, its output energizes an internal solenoid, which then allows the removal of either one or two trapped keys. Operating Temperature Humidity Mechanical Operations Max. Shear Force to Key Max. Torque to Key Material Trapped Key Components Face Plate Optional Box Assembly Fixing Weight Inputs Time Range EN292-1&2, EN1954-1, IEC/EN60204-1, EN1088, IEC/EN60947-5-1, ISO138491, ISO12100-1&2, ISO14119, GS-ET-19, AS4024.1 Cat. 3 per EN 954-1 (ISO 13849-1) Suitable for Cat. 2, 3, or 4 systems BG and CE marked for all applicable directives 0°C to +40°C (32°F to +104°F) 95% RH 100,000 15.1kN (3398lbs) 14Nm (124lb•in) 316L Stainless Steel 316L Stainless Steel ABS Plastic Tamper resistant screws 2.0kg (4.4lbs) 24V DC, 110V AC and 230V AC 0.1 second to 40 minutes The Single-key Timed delay Unit (STU) has one trapped key. After the CU1 timer has expired, the single trapped key can be removed and used to continue the next sequence in allowing access to the hazard. The single key must be returned to the STU and trapped to allow the non removable key to re-initiate the hazard. The Dual-key Timed delay Unit (DTU) has two trapped keys. After the CU1 timer has expired, both keys can be removed and used to continue the next sequences in allowing access to the hazard. Both keys must be returned to the DTU and trapped to allow the non removable key re-initiate the hazard. See the CU1 control unit for details on setting the delay time. Features • • • • • • Timed-delay output up to 40 minutes Single key or Dual key 316L stainless steel keys Category 1 Stop Replaceable code barrel assembly Optional IP65 enclosure The Prosafe Advantage Stainless steel construction. 5-14 Prosafe Trapped Key Interlock Switches Electronic Timed-Delay Units Product Selection Type Solenoid Voltage Contact Set 1 3 N.O. 40A 2 N.O. 20A 3 N.O. 40A 2 N.O. 20A 3 N.O. 40A 2 N.O. 20A 3 N.O. 40A 2 N.O. 20A 3 N.O. 40A 2 N.O. 20A 3 N.O. 40A 2 N.O. 20A 24V DC Single Key Out Panel Mounted 110V AC 230V AC 24V DC Dual Key Out Panel Mounted 110V AC 230V AC Contact Set 2 1 N.O. 20A 1 N.C. 20A 1 N.O. 20A 1 N.C. 20A 1 N.O. 20A 1 N.C. 20A 1 N.O. 20A 1 N.C. 20A 1 N.O. 20A 1 N.C. 20A I N.O. 20A 1 N.C. 20A Catalogue Number 440T-MSTUE10➊ 440T-MSTUE11➊ 440T-MSTUE20➊ 440T-MSTUE22➊ 440T-MSTUE30➊ 440T-MSTUE33➊ 440T-MDTUE10➊➊ 440T-MDTUE11➊➊ 440T-MDTUE20➊➊ 440T-MDTUE22➊➊ 440T-MDTUE30➊➊ 440T-MDTUE33➊➊ ➊ Substitute the desired primary code for this symbol (key not included). See page 5-6 for code selection. Accessories Description Replacement Key Replacement Code Barrel Replacement Dust Cap Page Number Catalogue Number 440T-AKEYE10⊗ 440T-ASCBE14➊ 440T-ASFC10⊗ 440T-AIPB20 440T-AIPB23 5-33 For use with 20A units For use with 40A units Optional IP65 Plastic Enclosure ➊ Substitute the desired primary code for this symbol (key not included). See page 5-6 for code selection. ⊗ Substitute the desired code for this symbol. See page 5-6 for code selection. Approximate Dimensions—mm (inches) Dimensions are not intended to be use for installation purposes. 250 (9.84) 226 (8.90) 216 (8.50) 118 (4.65) 90 (3.54) 160 (6.30) 150 (5.91) 70 (2.76) 70 (2.76) Optional ABS Box (440T-AIPB20) for 20 Amp Isolator One Key for STU (key not included) Nonremovable Key Two Keys for DTU (keys not included) 98 (3.86) 95 (3.74) 110 (4.33) 300 (11.81) 230 (9.06) 8 Holes 4.6 (0.18) Dia. Optional ABS Box (440T-AIPB23) for 40 Amp Isolator 5-15