engineering data sheet t531 time delay relay 3 pdt, 25 amp applicable socket: so-1058-8913 time delay relay on operate or on release fixed or adjustable timing delay contact arrangement 3 pdt power supply 28 vdc principle technical characteristics contacts rated at 25 amps / 28 vdc weight <0.265lb dimensions of case 1.73in x 1.54in x 1.02in max hermetically sealed corrosion protected metal can (mounting flange tin plated) contact electrical characteristics minimum operating cycles contact rating per pole and load type load current in amps @28vdc 50,000 cycles 10,000 cycles 50,000 cycles 50,000 cycles on resistive load on inductive load (l/r=5ms) on motor load on lamp load 25 12 10 5 50 cycles resistive overload 50 numbering system t531 - a e - 1001 - b basic series designation__________________________| | | | | 1-types of operation (a,b,d,u,w)__________________________| | | | 2-temperature range and timing accuracy (e,l,m,j,k,n)_______| | | 3-timing range (4 digits)________________________________________| | 4-mounting style and terminal types (b,c,d)[3]__________________________| www.leachintl.com north america 6900 orangethorpe ave. p.o. box 5032 buena park, ca 90622 usa tel: (01) 714-736-7599 fax: (01) 714-670-1145 europe, sa 2 rue goethe 57430 sarralbe france tel: (33) 3 87 97 98 97 fax: (33) 3 87 97 84 04 asia-pacific ltd. 20/f shing hing commercial bldg. 21-27 wing kut street central, hong kong tel: (852) 2 191 2886 fax: (852) 2 389 5803 data sheets are for initial product selection and comparison. contact leach international prior to choosing a component. date of issue: 9/07 - 66 - page 1 of 4
types of operation t531 temperature range and timing accuracy code temperature accuracy limitations e -55 c to +85 c 10% 10 ms below 200 ms l [4] -55 c to +85 c 5% not below 500 ms m [4] -55 c to +85 c 3% not below 1 s j [4] -55 c to +125 c 10% 10 ms below 200ms k [4] -55 c to +100 c 5% not below 500 ms n [4] -55 c to +100 c 3% not below 1 s d a t e o f i s s u e : 9 /0 7 - 6 7 - p a g e 2 o f 4 t i m e d e - e n e r g i z e d c o d e u : t i m e d e l a y o n r e l e a s e , a d j u s t a b l e w i t h e x t e r n a l r e s i s t o r c o d e w : t i m e d e l a y o n r e l e a s e , f i x e d t i m e t i m e e n e r g i z e d o u t p u t 2 8 v 0 v p o w e r s u p p l y p o s i t i v e c o n t r o l , f i x e d t i m e c o d e d : t i m e d e l a y o n r e l e a s e , c o d e a : t i m e d e l a y o n o p e r a t e , c o d e b : t i m e d e l a y o n o p e r a t e , a d j u s t a b l e w i t h e x t e r n a l r e s i s t o r f i x e d t i m e e n e r g i z e d o u t p u t d e - 2 8 v c o n t r o l 0 v e n e r g i z e d p o w e r s u p p l y d e - e n e r g i z e d t i m e o u t p u t 0 v 2 8 v p o w e r s u p p l y e n e r g i z e d
mounting styles and terminal types t531 dimensions in mm tolerances unless otherwise specified 0.25 mm schematic diagram/terminal layout timing range adjustable (for operation code b, f and w) code 1001: 0.1 to 1 second rx = (t / to -1) x 100kohm code 1002: 1 to 10 seconds code 1003: 10 to 100 seconds code 1004: 100 to 1000 seconds where rx in kohms t: desired time in seconds, to: time measured with rx = 0. example to determine rx value for a t time of 5 seconds: choose code 1002; measure time with rx = 0 (for example : to = 1 s); calculate rx = (5/1 - 1) x 100000 theoretical resistance: rx = 400 kohms fixed the timing code consists of 4 digits. to determine this code, convert the value to milliseconds value. use the first 3 digits of this value and add a fourth digit to indicate the number of zeros which must follow the three digits to show complete milliseconds value. examples: 250 ms --> code 2500 300 s --> code 3003 d a t e o f i s s u e : 9 /0 7 - 6 8 - p a g e 3 o f 4 + 0 . 1 - 0 . 1 5 s i l i c o n g a s k e t s h o r e a 1 5 - 3 0 + 0 . 0 7 - 0 . 0 3 2 3 . 8 m a x 1 5 . 9 1 5 . 9 3 . 8 b 0 . 1 1 . 3 c 3 9 m a x 6 . 3 7 . 6 3 . 8 1 3 6 . 7 3 5 . 5 4 4 m a x 2 6 m a x ? 1 . 6 + 0 . 0 3 - 0 . 0 5 1 . 2 7 0 . 1 ? 1 + 0 . 1 - 0 . 1 5 1 1 1 6 0 . 1 3 1 . 2 7 0 . 1 3 . 8 0 . 1 3 ? 2 . 4 + 0 . 0 1 - 0 . 1 1 7 . 6 9 . 5 7 d 0 . 1 5 4 4 4 m a x + 0 . 0 7 - 0 . 0 3 1 5 . 9 5 . 9 + 0 . 1 5 - 0 . 1 ? 1 2 3 . 8 m a x 7 . 6 + 0 . 1 5 - 0 . 1 ? 2 . 4 + 0 . 0 4 - 0 . 1 3 5 . 5 3 6 . 7 s o l d e r h o o k s g o l d p l a t e d p i n s s o l d e r h o o k s x 1 + a y 2 - b 1 c 2 3 t d x 2 y 1 + - r x t i m e d e l a y o n o p e r a t e o r o n r e l e a s e r x : e x t e r n a l r e s i s t o r t i m e d e l a y o n r e l e a s e w i t h p o s i t i v e c o n t r o l v o l t a g e ( y 1 ) a b c y 2 x 1 - + t d x 2 1 y 1 - + 2 3
general characteristics t531 operating voltage 18 to 32 vdc (air norm 2021 e) recycle time less than or equal to 50 ms dielectric strength at sea level - all pins connected together and can 500 v / 50 hz - between open contacts 500 v / 50 hz dielectric strength at altitude 80,000 ft, all points 250 v / 50 hz initial insulation resistance at 500 vdc greater than or equal to 500 m w sinusoidal vibration 20g / 10 to 2000 hz shock 100g / 6 ms power loss protection 0.5 ms max undamaged against positive transients + 80 vdc spike susceptibility 600 vdc self generated spikes 50 vdc notes 1. relays with c mounting are compatible with socket families s 502, sf 502 .. 2. isolation spacer pads for pcb mounting available on request. 3. for other mounting styles or terminal types, please contact the factory. 4. codes l, m, k and n not available for adjustable timing. date of issue: 9/07 - 69 - page 4 of 4
engineering data sheet so-1058-8913 relay socket 25 amp basic socket series designation for: series kcl and t531 designed to the standards and requirements of: mil-s-12883/54 general characteristics 1. supplied with mounting hardware no. 12, 16 and 20 contacts, no. 12, 16 and 20 crimps. 2. standard tolerances .xx .01; xxx .005 3. weight .120 lb. max 4. temperature range -70 c to +125 c www.leachintl.com north america 6900 orangethorpe ave. p.o. box 5032 buena park, ca 90622 usa tel: (01) 714-736-7599 fax: (01) 714-670-1145 europe, sa 2 rue goethe 57430 sarralbe france tel: (33) 3 87 97 98 97 fax: (33) 3 87 97 84 04 asia-pacific ltd. 20/f shing hing commercial bldg. 21-27 wing kut street central, hong kong tel: (852) 2 191 2886 fax: (852) 2 389 5803 data sheets are for initial product selection and comparison. contact leach international prior to choosing a component. date of issue: 3/06 - 16 - page 1 of 1 socket drawing a b c 1 2 x1 x2 3 no. 4-40 unc-2a 3 places mounting stud stainless steel 3 places 1.07 no. 4-40 unc-2a 3 places no. 10-32 unf-2a 3 places .890 .220 .093 max .625 .312 .19r max 4 places .234 .630 .432 .06r min 4 places 1.72 1.406 1.00 1.015 y1 y2 socket gasket silicone rubber .093 max panel mounting detail 3 places relay hardware mounting mounting dimensions suggested mounting hole layout .05 r 4 places 1.100 .550 1.406 .625 .312 1.160 hole for .112 screw top mount-clearance hole for .192 screw bottom mount-clearance
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