nema terminal blocks heavy duty d escription /a pplication this compact, heavy duty block line accepts single or combination wires up to #4 awg, solid or stranded. the compact design allows at least 138 circuits per six foot length to be mounted. the pitch of this 600 volt block is 0.50" (center spacing). d esign a dvantages ?choose from 5 different contact styles. ?600 volt ul and nema rating. ?conservatively rated from 50 to 90 amperes per circuit, depending on which contact style is selected. choose any of three mounting methods ?two way flat base models surface mount directly to the panel or snap-on miniature channel. dovetail base models mount on standard channel. ?packaged for rapid handling and assembly ?snap-fit sections are packed 10 per carton. ?only one end section needed per block assembly. readily identify circuits ?mark directly on block sections or use removable marking strip. pre- printed strips are also available. 275 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 200 series heavy duty lr25557 e63810
dimensions shown are for reference only. dimensions are in inches. lr25557 e63810 nema terminal blocks heavy duty 276 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 200 series heavy duty 600 v, 0.50" pitch strap screw strap clamp tubular screw tubular clamp characteristics type of block model model model model direct mount (flat base) nylon, unpainted 241 248 242 243 polypropylene p241 p248 p242 p243 channel mount (dovetail base) nylon, painted 0241 0248 0242 0243 polypropylene p0241 P0248 p0242 p0243 contact type specifications wire range (awg) solid & stranded 22-10 18-8 18-4 18-6 wire strip length (in.) 1 / 2 1 / 2 1 / 2 screw type 10-32 8-32 1 / 4 -28 1 / 4 -28 slotted binding head pan head slotted headless slotted headless ampacity 35 a 50 a 85 a 65 a end sections direct mount, nylon 250 250 250 250 direct mount, polypropylene p250 p250 p250 p250 channel mount, nylon 0250 0250 0250 0250 channel mount, polypropylene p0250 p0250 p0250 p0250 note: standard packaging is 40 pieces for contact and 25 pieces for end sections. notes: for factory assembled blocks, suffix catalog number with number of blocks desired. (maximum number of flat base preassembled sections is 12). example: ten tubular clamp, dovetail based sections, pre- assembled on channel = 024310 example: twelve polypropylene strap clamp flat base sec- tions = p24812 for unpainted factory assembled blocks supplied with a removable marking strip add ?1 to catalog number. for blocks with two or more different contact sections, imprinted marking strips, or special features, consult factory. available in special high temperature (70?) polytherimide material. to order, suffix catalog number with letters ?ht. comparison (type of block) direct mount channel mount (flat base) (dovetail base)
dimensions shown are for reference only. dimensions are in inches. lr25557 e63810 nema terminal blocks heavy duty 277 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 corrosion resistant strap screw corrosion resistant tubular screw corrosion resistant tubular clamp model model model d241 d242 d243 dp241 dp242 dp243 d0241 d0242 d0243 dp0241 dp0242 dp0243 22-10 18-4 18-4 1 / 2 1 / 2 10-32 nickel plated 1/4-28 nickel plated 1/4-28 nickel plated slotted binding head slotted headless slotted headless 35 a 85 a 65 a 250 250 250 p250 p250 p250 0250 0250 0250 p0250 p0250 p0250 note: standard packaging is 40 pieces for contact and 25 pieces for end sections.
dimensions shown are for reference only. dimensions are in inches. nema terminal blocks heavy duty 200 series heavy duty accessories 278 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 lr25557 e63810 break pre-punched elevated steel away aluminum aluminum miniature channel steel channel channel catalog number 12 60 60-b-36 64 60-so 63-bu 67 standard package 6 feet 6 feet 6 feet 3 feet 3 feet 3 feet 3 feet screw miniature channel universal snap-in for #12 see-thru ganging clamps clamps clamps channel cover rod catalog number 61 68 62 11 23-bu 30 standard package 100 100 100 100 25 2 feet plastic plastic vinyl elevated nylon jumper snap-apart cloth cloth marking marking holding marking for tubular for tubular tape tape strips strip plug pen contacts contacts catalog number 56 55-bu 50-bu 52-bu 65-bu 99-bu 42-bu 75 standard package 10 sheets 50 feet 25 feet 18 inches 100 12 100 12 ckt mounting channel channel clamps marking accessories jumpers
nema terminal blocks heavy duty 279 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 dimensions shown are for reference only. dimension s are in inches. 200 series heavy duty specifications v oltage r ating : blocks meet 600 volt creepage and clearance requirements of nema, ul and csa for general industrial control equipment and panelboards. withstand voltages greatly in excess of ieee switchgear standards for 750 volts. a mpacity : for a single #4awg wire the maximum amperage recommended is 85 amps. standard contacts: m aterial : electrical grade copper or copper alloy conductor. steel screws plated to resist corro- sion in most industrial applications al-cu t ubular s crew : aluminum compatibility with aluminum or copper conductors. al-cu is tinplated brass. environmental contacts (for highly corrosive atmospheres) t ubular s crew : electrical grade copper tube with nickel plating. nickel plated brass screws. s trap s crew : nickel plated brass straps and screws. nickel plating exceeds specification qq- n-290 class i, type vii. nylon housing: m aterial : nylon; unfilled type 6/6 m ax . c ontinuous t emperature : 125? (257?) b reakdown v oltage (ac, 60 h z ): contact to contact: 7000v contact to ground: 7800v d ielectric s trength (rh40% at s ea l evel ): 470-385 volts/mil thickness per astm d149 ul h igh v oltage a rc t racking ( inches / min .): .01-.35 w ater a bsorption (24 hrs . % wt . gain ): 1.5% f lammability : ul94v-2 c hemical r esistance : resistant to aromatic hydrocarbons, strong alkalies per astm d543 r adiation r esistance ( ergs g -1 (c)): 8 x 10 7 c olor : translucent white independent testing service listing and recognition wire sizes, solid or stranded tublar screw tubular screw 1 #4 awg, 1 #6 awg, 1 or 2 #8 awg, 1 to 4 #10 awg, 1 or 5 #12 awg, 1 to 4 #14 awg, 1 or 6 #16 awg, 1 to 8 #18 awg, al-cu tubular screw 1 #12 al or cu, 1 #6 al or cu, 1 or 2 #8 cu, 1 to 4 #10 cu, 1 or 5 #12 cu, 1 to 6 #14 cu, 1 or 6 #16 cu, 1 to 8 #18 cu, tubular clamp 1 #6 awg, 1 or 2 #8 awg, 1 to 3 #10 awg, 1 to 4 #12 awg, 1 or 4 #14 awg, 1 to 6 #16 awg, 1 or 8 #18 awg strap clamp 1 #18 to 1 #8 awg polypropylene housing: m aterial : polypropylene; filled self-extinguishing m ax . c ontinuous t emperature : 105? (221?) b reakdown v oltage (ac, 60h z ): contact to ground: 7800v contact to contact: 7000v d ielectric s trength (rh40% at s ea l evel ): 500 volts/mil thickness per astm d149 ul h igh v oltage a rc t racking ( inches / min .): did not track w ater a bsorption (24 hrs . % wt . gain ): 0.02% per astm d570 f lammability : ul94v-0 c hemical r esistance : resistant to most acids, alkalines, and saline solutions. also resistant to higher aliphatic solvents and polar substances per astm d543 r adiation r esistance ( ergs g -1 (c)): no data available c olor : opaque white lr25557 e63810
dimensions shown are for reference only. dimensions are in inches. nema terminal blocks heavy duty 280 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 f lat b ase 200 series 600 volt direct mount
dimensions shown are for reference only. dimensions are in inches. nema terminal blocks heavy duty 281 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 f lat b ase m ounted o n #12 m iniature c hannel 200 series 600 volt channel mount
dimensions shown are for reference only. dimensions are in inches. nema terminal blocks heavy duty 282 thomas & betts electronics/oem division tel: 901-252-5000 fax: 901-252-1312 d ovetail b ase m ounted o n s tandard #60 c hannel 200 series 600 volt channel mount (standard)
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