Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 442 General Purpose Relay – LY A Miniature Power Relay ■ Equipped with arc barrier. ■ Dielectric strength: 2,000 V. ■ Built-in diode models added to the LY Series. ■ Single-pole and double-pole models are applicable to operating coils with ratings of 100/110 VAC, 110/120 VAC, 200/220 VAC, 220/240 VAC, or 100/110 VDC). ■ Three-pole and four-pole models are applicable to operating coils with ratings of 100/110 VAC, 200/220 VAC, or 100/110 VDC). RC+ VDE LR Ordering Information ■ Open Relays Type Standard With built-in diode (DC only) With built-in CR (AC only) Contact form Plug-in/solder terminals Plug-in/solder terminals with LED indicator PCB terminals Upper-mounting plug-in/solder terminals SPDT LY1 LY1N LY1-0 LY1F DPDT LY2 LY2N LY2-0 LY2F DPDT (bifurcated) LY2Z LY2ZN LY2Z-0 LY2ZF 3PDT LY3 LY3N LY3-0 LY3F 4PDT LY4 LY4N LY4-0 LY4F SPDT LY1-D LY1N-D2 – – DPDT LY2-D LY2N-D2 – – DPDT (bifurcated) LY2Z-D LY2ZN-D2 – – 3PDT LY3-D – – – 4PDT LY4-D LY4N-D2 – – SPDT – – – – DPDT LY2-CR LY2N-CR – – DPDT (bifurcated) LY2Z-CR LY2ZN-CR – – Note: 1. When ordering, add the rated coil voltage to the model number. Rated coil voltages are given in the coil ratings table. Example: LY2, 6 VAC Rated coil voltage 2. Relays with #187 quick connect terminals are also available with SPDT and DPDT contact. Ask your OMRON representative for details. 3. SEV models are standard Relays excluding DPDT (bifurcated) models. 4. VDE- or LR- qualifying Relays must be specified when ordering. 442 Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 443 General Purpose Relay – LY ■ Accessories (Order Separately) Sockets Poles Front-connecting Socket DIN track/screw terminals Back-connecting Socket Plug-in/solder terminals Wrapping terminals PT08 PT08QN PCB terminals 1 or 2 PTF08A-E, PTF08A PT08-0 3 PTF11A PT11 PT11QN PT11-0 4 PTF14A-E, PTF14A PT14 PT14QN PT14-0 Note: 1. For PTF08-E and PTF14A-E, see “Track Mounted Socket.” 2. PTF■A (-E) Sockets have met UL and CSA standards: UL 508/CSA C22.2. Mounting Plates for Sockets For 1 Socket For 10 Sockets For 12 Sockets For 18 Sockets PYP-1 – – PYP-18 PT11 PT11QN PTP-1-3 – PTP-12 – PT14 PT14QN PTP-1 PTP-10 – – Socket-Hold-down Clip Pairings Relay type Poles Front-connecting Sockets Socket model Standard, bifurcated contacts operation indicator, built-in diode CR Circuit Back-connecting Sockets Clip model PYC-A1 Socket model 1, 2 PTF08A-E, PTF08A 3 PTF11A PT11(QN), PT11-0 4 PTF14A-E, PTF14A PT14(QN), PT14-0 2 PTF08A-E, PTF08A Y92H-3 Clip model PT08(QN), PT08-0 PYC-P PT08(QN), PT08-0 PYC-1 Specifications ■ Coil Rating Single- and Double-pole Relays Rated voltage Rated current 50 Hz AC DC Coil Resistance 60 Hz Coil Induction (reference value) Arm. OFF Arm. ON 6V 214.1 mA 183 mA 12.2 Ω 0.04 H 0.08 H 12 V 106.5 mA 91 mA 46 Ω 0.17 H 0.33 H 24 V 53.8 mA 46 mA 180Ω 0.69 H 1.30 H 50 V 25.7 mA 22 mA 788ΩW 3.22 H 5.66 H 100/110 V 11.7/12.9 mA 10/11 mA 3,750 Ω 14.54 H 24.6 H 110/120 V 9.9/10.8 mA 8.4/9.2 mA 4,430 Ω 19.20 H 32.1 H 200/220 V 6.2/6.8 mA 5.3/5.8 mA 12,950 Ω 54.75 H 94.07 H 220/240 V 4.8/5.3 mA 4.2/4.6 mA 18,790 Ω 83.50 H 136.40 H 6V 150 mA 40 Ω 0.16 H 0.33 H 12 V 75 mA 160 Ω 0.73 H 1.37 H 24 V 36.9 mA 650 Ω 3.20 H 5.72 H 48 V 18.5 mA 2,600 Ω 10.6 H 21.0 H 100/110 V 9.1/10 mA 11,000 Ω 45.6 H 86.2 H Must operate voltage Must release voltage Max. voltage Power consumption (approx.) % of rated voltage 80% max. 30% min. 110% 1.0 to 1.2 VA (60 Hz) 0.9 to 1 VA (60 Hz) 10% min. 0.9 W Note: See notes on the bottom of next page. 443 General Purpose Relays Socket model PT08 PT08QN Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 444 General Purpose Relay – LY Three-pole Relays Rated voltage AC DC Rated current Coil Resistance Coil Induction (reference value) 50 Hz 60 Hz Arm. OFF Arm. ON 6V 310 mA 270 mA 6.7 Ω 0.03 H 0.05 H 12 V 159 mA 134 mA 24 Ω 0.12 H 0.21 H 24 V 80 mA 67 mA 100 Ω 0.44 H 0.79 H 50 V 38 mA 33 mA 410 Ω 2.24 H 3.87 H 100/110 V 14.1/16 mA 12.4/13.7 mA 2,300 Ω 10.5 H 18.5 H 200/220 V 9.0/10.0 mA 7.7/8.5 mA 8,650 Ω 34.8 H 59.5 H 6V 234 mA 25.7 Ω 0.11 H 0.21 H 12 V 112 mA 107 Ω 0.45 H 0.98 H 24 V 58.6 mA 410 Ω 1.89 H 3.87 H 48 V 28.2 mA 1,700 Ω 8.53 H 13.9 H 8,500 Ω 29.6 H 54.3 H 100/110 V 12.7/13 mA Must operate voltage Must release voltage Max. voltage Power consumption (approx.) % of rated voltage 80% max. 30% min. 110% 10% min. 1.6 to 2.0 VA (60 Hz) 1.4 W Note: See notes under next table. Four-pole Relays Rated voltage AC DC Rated current Coil Resistance Coil Induction (reference value) 50 Hz 60 Hz 6V 386 mA 330 mA 5Ω 0.02 H Arm. OFF 0.04 H Arm. ON 12 V 199 mA 170 mA 20 Ω 0.10 H 0.17 H 24 V 93.6 mA 80 mA 78 Ω 0.38 H 0.67 H 50 V 46.8 mA 40 mA 350 Ω 1.74 H 2.88 H 100/110 V 22.5/25.5 mA 19/21.8 mA 1,600 Ω 10.5 H 17.3 H 200/220 V 11.5/13.1 mA 9.8/11.2 mA 6,700 Ω 33.1 H 57.9 H 6V 240 mA 25 Ω 0.09 H 0.21 H 12 V 120 mA 100 Ω 0.39 H 0.84 H 24 V 69 mA 350 Ω 1.41 H 2.91 H 48 V 30 mA 1,600 Ω 6.39 H 13.6 H 100/110 V 15/15.9 mA 6,900 Ω 32 H 63.7 H Must operate voltage Must release voltage Max. voltage Power consumption (approx.) % of rated voltage 80% max. 30% min. 10% min. 110% 1.95 to 2.5 VA (60 Hz) 1.5 W Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15%/–20% for rated currents and ±15% for DC coil resistance. 2. Performance characteristic data are measured at a coil temperature of 23°C. 3. AC coil resistance and impedance are provided as reference values (at 60 Hz). 4. Power consumption drop was measured for the above data. When driving transistors, check leakage current and connect a bleeder resistor if required. 444 Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 445 General Purpose Relay – LY ■ Contact Rating Relay Single Contact 1-pole Load Resistive load (cosϕ = 1) Inductive load (cosϕ = 0.4, L/R = 7 ms) 110 VAC 10 A 24 VDC 7 A Bifurcated contacts 2-, 3- or 4-pole Resistive load (cosϕ = 1) 110 VAC 15 A 24 VDC 15 A Rated Carry Current 15 A 10 A 7A Max. switching voltage 250 VAC 125 VDC 250 VAC 125 VDC 250 VAC 125 VDC Max. switching current 15 A 10 A 7A Max. switching power 1,700 VA 360 W Failure rate 100 mA, 5 VDC (reference value)* 1,100 VA 240 W 110 VAC 7.5 A 24 VDC 5 A 2-pole Resistive load (cosϕ = 1) Rated Load 1,100 VA 170 W 110 VAC 10 A 24 VDC 10 A Inductive load (cosϕ = 0.4, L/R = 7 ms) 825 VA 120 W 100 mA, 5 VDC 110 VAC 5A 24 VDC 5 A 550 VA 120 W Inductive load (cosϕ = 0.4, L/R = 7 ms) 110 VAC 4 A 24 VDC 4A 440 VA 100 W 100 mA, 5 VDC *Note: P level: λ60 = 0.1 x 10-6/operation Characteristics Item All except Relays with bifurcated contacts Contact resistance 50 mΩ max. Operate time 25 ms max. Release time 25 ms max. Max. operating frequency Mechanical: 18,000 operations/hr Electrical: 1,800 operations/hr (under rated load) Relays with bifurcated contacts Insulation resistance 100 MΩ min. (at 500 VDC) Dielectric strength 1,000 VAC, 50/60 Hz for 1 min between contacts of same polarity 2,000 VAC, 50/60 Hz for 1 min between contacts of different polarity Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude) Malfunction: 10 to 55 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude) Shock resistance Destruction: 1,000 m/s2 Malfunction: 200 m/s2 Endurance Mechanical: AC: 50,000,000 operations min. (at 18,000 operations/hr) DC: 1,00,000,000 operations min. (at 18,000 operations/hr) Electrical: Single-, three-, and four-pole: 200,000 operations min. (at 1,800 operations/hr under rated load) Double-pole: 500,000 operations min. (at 1,800 operations/hr under rated load) Ambient temperature* Operating: Single- and double-pole standard, bifurcated-contact Relays: –25°C to 55°C (with no icing) (–25°C to 70°C if carry current is 4 A or less) All other Relays: –25°C to 40°C (with no icing) (–25°C to 55°C if carry current is 4 A or less) Ambient humidity Operating: 5% to 85% Weight Single- and double-pole: approx. 40 g, three-pole: approx. 50 g, four-pole: approx. 70 g Note: 1. The values given above are initial values 2. The upper limit of 40°C for some Relays is because of the relationship between diode junction temperature and the element used. 445 General Purpose Relays ■ Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 446 General Purpose Relay – LY ■ Endurance Under Real Loads (reference only) LY1 Rated voltage 100 VAC Load type Conditions Operating frequency Electrical life AC motor 400 W, 100 VAC single-phase with 35-A inrush current, 7-A current flow ON for 10 s, OFF for 50 s 50,000 operations AC lamp 300 W, 100 VAC with 51-A inrush current, 3-A current flow ON for 5 s, OFF for 55 s 100,000 operations 500 W, 100 VAC with 78-A inrush current, 5-A current flow 25,000 operations Capacitor (2,000 µF) 24 VDC with 50-A inrush current, 1-A current flow ON for 1 s, OFF for 6 s 100,000 operations AC solenoid 50 VA with 2.5-A inrush current, 0.25-A current flow ON for 1 s, OFF for 2 s 1,500,000 operations 100 VA with 5-A inrush current, 0.5-A current flow 800,000 operations LY2 Rated voltage 100 VAC Load type Conditions Operating frequency Electrical life AC motor 200 W, 100 VAC single-phase with 25-A inrush current, 5-A current flow ON for 10 s, OFF for 50 s 200,000 operations AC lamp 300 W, 100 VAC with 51-A inrush current, 3-A current flow ON for 5 s, OFF for 55 s 80,000 operations Capacitor (2,000 µF) 24 VDC with 50-A inrush current, 1-A current flow ON for 1 s, OFF for 15 s 10,000 operations 24 VDC with 20-A inrush current, 1-A current flow AC solenoid 50 VA with 2.5-A inrush current,, 0.25-A current flow 150,000 operations ON for 1 s, OFF for 2 s 100 VA with 5-A inrush current, 0.5-A current flow 1,000,000 operations 500,000 operations LY4 Rated voltage 100 VAC Load type AC motor Conditions 200 W, 200 VAC triple-phase with 5-A inrush current, 1-A current flow Operating frequency ON for 10 s, OFF for 50 s 750 W, 200 VAC triple-phase with 18-A inrush current, 3.5 A current flow 70,000 operations AC lamp 300 W, 100 VAC with 51-A inrush current, 3-A current flow ON for 5 s, OFF for 55 s 50,000 operations Capacitor (2,000 µF) 24 VDC with 50-A inrush current, 1-A current flow ON for 1 s, OFF for 15 s 5,000 operations 24 VDC with 20-A inrush current, 1-A current flow ON for 1 s, OFF for 2 s 200,000 operations 50 VA with 2.5-A inrush current, 0.25-A current flow ON for 1 s, OFF for 2 s 1,000,000 operations AC solenoid 100 VA with 5-A inrush current, 0.5-A current flow 446 Electrical life 500,000 operations 500,000 operations Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 447 General Purpose Relay – LY ■ Approved Standards UL 508 Recognitions (File No. 41643) No. of poles 1 Coil ratings 6 to 240 VAC 6 to 125 VDC 2 3 and 4 Contact ratings Operations 15 A, 30 VDC (Resistive) 15 A, 240 VAC (General use) TV-5, 120 VAC 1/2 HP, 120 VAC 6 x 103 15 A, 28 VDC (Resistive) 15 A, 120 VAC (Resistive) 12 A, 240 VAC (General use) 1/2 HP, 120 VAC TV-3, 120 VAC 6 x 103 10 A, 30 VDC (Resistive) 10 A, 240 VAC (General use) 1/3 HP, 240 VAC 25 x 103 25 x 103 6 x 103 CSA 22.2 No. 14 Listings (File No. LR31928) Coil ratings Contact ratings Operations 15 A, 30 VDC (Resistive) 15 A, 120 VAC (General use) 1/2 HP, 120 VAC TV-5, 120 VAC 6 x 103 2 15 A, 30 VDC (Resistive) 15 A, 120 VAC (Resistive) 1/2 HP, 120 VAC TV-3, 120 VAC 6 x 103 3 and 4 10 A, 30 VDC (Resistive) 10 A, 240 VAC (General use) 6 to 240 VAC 6 to 125 VDC 25 x 103 General Purpose Relays No. of poles 1 SEV Listings (File No. D3,31/137) No. of poles Coil ratings 6 to 240 VAC 6 to 125 VDC 1 2 to 4 Contact ratings 15 A, 24 VDC 15 A, 220 VAC Operations 6 x 103 10 A, 24 VDC 10 A, 220 VAC TÜV (File No. R9251226) (IEC255) No. of poles 1 to 4 Coil ratings 6 to 125 VDC 6 to 240 VAC Contact ratings LY1, LY1-FD 15 A, 110 VAC (cosϕ = 1) 10 A, 110 VAC (cosϕ = 0.4) LY2, LY2-FD, LY3, LY3-FD, LY4, LY4-FD 10 A, 110 VAC (cosϕ = 1) 7.5 A, 110 VAC (cosϕ = 0.4) Operations 100 x 103 VDE Recognitions (No. 9903UG and 9947UG) No. of poles 1 2 Coil ratings 6, 12, 24, 50, 110, 220 VAC 6, 12, 24, 48, 110 VDC Contact ratings 10 A, 220 VAC (cosϕ = 1) 7 A, 220 VAC (cosϕ = 0.4) 10 A, 28 VDC (L/R = 0 ms) 7 A, 28 VDC (L/R = 7 ms) 7 4 7 4 A, A, A, A, Operations 200 x 103 220 VAC (cosϕ = 1) 220 VAC (cosϕ = 0.4) 28 VDC (L/R = 0 ms) 28 VDC (L/R = 7 ms) 447 Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 448 General Purpose Relay – LY ■ Approved Standards (cont.) LR Recognitions (No. 563KOB-204523) No. of poles Coil ratings 2, 4 6 to 240 VAC 6 to 110 VDC Contact ratings 7.5 A, 230 VAC (PF0.4) 5 A, 24 VDC (L/R=7 ms) Engineering Data LY1 Maximum Switching Power Switching current (A) 10 5 AC (cosφ = 0.4) Life: 200,000 operations 1 0.5 DC L/R = 7 ms DC resistive load Endurance Endurance (x10 3operations) AC resistive load 15 0.1 10,000 5,000 110 VAC resistive load 24 VDC resistive load 1,000 500 24 VDC (L/ R = 7ms) 100 10 100 500 1,000 0 2 4 6 Switching voltage (V) 5 AC (cosφ = 0.4) Life: 500,000 operations 1 0.5 DC L/R = 7 ms DC resistive load 10 12 14 16 18 20 Endurance Endurance (x10 3 operations) Switching current (A) AC resistive load 8 Switching current (A) LY2 Maximum Switching Power 10 110 VAC (cosφ = 0.4) 1,0000 5,000 24 VDC resistive load 110 VAC resistive load 1,000 500 110 VAC (cosφ = 0.4) 0.1 24 VDC (L/R = 7ms) 100 10 100 0 500 1,000 2 LY3 and LY4 Maximum Switching Power Switching current (A) 5 AC (cosφ = 0.4) Life: 200,000 operations 1 0.5 DC L/R = 7 ms DC resistive load 0.1 10 100 Switching voltage (V) 448 8 10 12 14 16 18 20 1,0000 5,000 24 VDC resistive load 110 VAC resistive load 1,000 110 VAC (cosφ = 0.4) 500 100 500 1,000 6 Endurance Endurance (x10 3 operations) AC resistive load 10 4 Switching current (A) Switching voltage (V) 0 24 VDC (L/R = 7ms) 2 4 6 8 10 12 14 16 18 20 Switching current (A) Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 449 General Purpose Relay – LY LY2Z Endurance 10 AC resistive load 5 AC (cosφ = 0.4) Endurance (x103 operations) Switching current (A) LY2Z Maximum Switching Power DC resistive load 1 0.5 DC L/R = 7 ms 24 VDC resistive load 10,000 110 VAC resistive load 5,000 110 VAC (cosφ = 0.4) 1,000 500 24 VDC (L/R = 7ms) 100 Life: 500,000 operations 0 10 50 100 0 500 1,000 Switching voltage (V) 2 4 6 8 10 Switching current (A) Dimensions Note: All units are in millimetres unless otherwise indicated. Relays with Solder/Plug-in Terminals General Purpose Relays ■ LY1 LY1N (-D2) LY1-D 0.5 Eight, 2-dia. holes 28 max. 5 3 36 max. 21.5 max. 6.4 Terminal Arrangement/Internal Connections (Bottom View) LY1 LY1N LY1-D DC Model AC Model LY1N-D2 Note: The DC models have polarity. 449 Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 450 General Purpose Relay – LY LY2 LY2-D LY2N LY2N-D2 LY2Z LY2Z-D LY2ZN LY2ZN-D2 Terminal Arrangement/Internal Connections (Bottom View) LY2(Z)-D LY2(Z) 0.5 28 max. Eight, 3-dia. holes 5 3 36 max. 21.5 max. 6.4 LY2(Z)N DC Model LY2(Z)N-D2 AC Model Note: The DC models have polarity. LY3 LY3N LY3-D 0.5 28 max. 5 36.5 max. 3 6.4 31.5 max. Eleven, 3-dia. holes Terminal Arrangement/Internal Connections (Bottom View) LY3 Note: The DC models have polarity. 450 LY3-D LY3N DC Model AC Model Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 451 General Purpose Relay – LY LY4 LY4N LY4-D LY4N-D2 Terminal Arrangement/Internal Connections (Bottom View) LY4 LY4-D 0.5 28 max. 5 41.5 max. 3 36 max. 6.4 Fourteen, 3-dia. holes LY4N-D2 LY4N AC Model General Purpose Relays DC Model Note: The DC models have polarity. LY2-CR LY2Z-CR LY2N-CR LY2ZN-CR Terminal Arrangement/Internal Connections (Bottom View) LY2(Z)N-CR LY2(Z)-CR 0.5 Eight, 3-dia. holes 28 max. 5 3 53 max. CR Element 21.5 max. 6.4 C: 0.033 µF R: 120 Ω Model: LY2N-CR ■ Relays with PCB Terminals LY1-0 LY3-0 LY2-0 LY4-0 PC Board Holes (Bottom View) 0.5 4.1 14.2 10 14.2 10 10 10 10 10 10 28 max. 2 1 36 max. 4.5 (see note 2) 4.6 5.75 21.5 max. 7.15 5.5 3.4 Note: 1. The above model is the LY2-0. 2. This figure is 6.4 for the LY1-0 13.15 3.4 Five, 2.5-dia. holes 5.3 Eight, 2.5-dia. holes 5.3 Eleven, 2.5-dia. holes Fourteen, 2.5-dia. holes Note: 1. The tolerance for the above figures is 0.1 mm. 2. Besides the terminals, some part of the LY1-0 carries current. Due attention should be paid when mounting the LY1-0 to a double-sided PC board. 451 Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 452 General Purpose Relay – LY ■ Upper Mounting relays LY1F LY2F Mounting Holes 22.5 max. 2 0.5 29 38 max. 44 max. 38±0.1 5 3 35.5 max. Eight, 2-dia. holes (see note) 6.4 Two, 3.5-dia. holes (or Two M3 holes) 3.5 Note: 1. Eight 3-dia. holes should apply to the LY2F model. LY3F 32 max. 3.5 2 0.5 28.5 38 44 max. max. 38±0.1 5 3 36 max. Eleven, 3-dia. holes Two, 3.5-dia. holes (or two, M3 holes) 6.4 LY4F Mounting holes 41.5 max. 3.5 2 Two, 3.5 dia. holes (or two, M3 holes) 0.5 28 38 max. 44 max. 38±0.1 5 Fourteen, 3-dia. holes 35.5 max. 452 3 28 6.4 28±0.1 Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 453 General Purpose Relay – LY ■ Mounting Height with Socket The following Socket heights should be maintained. Back-connecting Front-connecting LY 67 (84) 71 (see note) LY 40 (57) Note: 1. The PTF@A (-E) can be track-mounted or screw-mounted. 2. For the LY@-CR (CR circuit built-in type) model, this figure should be 88. PT@ PTF@A (-E) Sockets PTF08A-E PTF11A PTF14A-E PT14QN PT11QN PT08-0 PT08 PT11 PT14 PT11-0 PT14-0 PT08QN General Purpose Relays ■ Mounting Plates for Back-connecting PYP-1 PTP-1-3 Two, 3.4-dia. holes 5.1 42 49 42±0.1 PTP-1 59 7.7 21.6 Four, 3.4-dia. holes 49 PYP-18 R5 492 17 x 27.4 = 465.8±0.6 7.7 4.5 3.4 42±0.1 49 42±0.1 49 72 elliptical holes R1.7 28 R5 t=1.6 Four, 3.4-dia. holes 52±0.1 7.742±0.1 49 t=1.6 t=1.6 21.6 PTP-10 17 x 27.4 = 465.8±0.6 17 x 27.4 = 465.8±0.6 PTP-12 7.4 9 x 49.4 = 444.6±0.6 40 elliptical holes 11 x 39.4 = 433.4±0.6 t=1.6 48 elliptical holes 7.7 42±0.1 49 7.7 42±0.1 49 R1.7 3.4 1.1 3.4 4.5 9 x 49.4 = 444.6±0.6 9 x 49.4 = 444.6±0.6 492 Twelve, square holes 4.5 R2.25 7.4 23.7 t=1.6 11 x 39.4 = 433.4±0.6 11 x 39.4 = 433.4±0.6 492 29.3 t=1.6 453 Omron A5 Catalogue 2007 419-518 11/9/06 11:03 am Page 454 General Purpose Relay – LY ■ Hold-down Clips Hold-down clips are used to hold Relays to Sockets and prevent them from coming loose due to vibration or shock. Used with Socket PYC-A1 PYC-P Used with Socket mounting plate PYC-S For CR circuit built-in Relay Y92H-3 PYC-1 Precautions ■ Connections Do not reverse polarity when connecting DC-operated Relays with built-in diodes or indicators. ALL DIMENSIONS SHOWN ARE IN MILLIMETRES. To convert millimetres into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. CAT. No. J002-E2-10 454