Application – Three-Phase Motors
Recommended Adjustable Overload Relays
Advance Controls: MDR3 Overload
AEG Series: B17S, B27S,
ABB Type: RVH 40, RVH65, RVP160,
T25DU, T25CT, TA25DU
AGUT: MT03, R1K1, R1L0, R1L3, TE set Class 5
Allen Bradley: Bulletin 193,
Automatic Switch Types: DQ,
LR2 Class 10
Benshaw: RSD6 (Class 10) Soft Start
Bharita C-H: MC 305 ANA 3
Clipsal: 6CTR, 6MTR
Fanal Types: K7 or K7D through K400
Franklin Electric:
Fuji Types:
Furnas Types: US15 48AG & 48BG, 958L,
General Electric: CR4G, CR7G, RT*1, RT*2,
RTF3, RT*4,
Kasuga: RU Set Operating Time Code = 10 & time setting 6 sec max
Klockner-Moeller Types: ZOO, Z1, Z4, PKZM1,
PKZM3 & PKZ2
Lovato: RC9, RC22, RC80, RF9, RF25 & RF95
Matsushita:
Mitsubishi: ET,
Omron: K2CM Set Operating Timing Code = 10 & time setting 6 sec max,
Riken: PM1, PM3
Samwha: EOCRS Set for Class 5,
Siemens Types: 3UA50,
Sprecher and Schuh Types: CT, CT1, CTA 1, CT3K,
CEF1 & CET3 set at 6 sec max, CEP 7 Class 10, CT4, 6, & 7, CT3, KT7
Square D/Telemecanique: Class 9065 Types: TD, TE, TF, TG, TJ, TK, TR, TJE &TJF (Class 10),
Table 30 - 60 Hz 8" Motors
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| NEMA | HEATERS FOR | ADJUSTABLE | |||
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| OVERLOAD RELAYS | RELAYS | ||||
HP | KW | VOLTS | STARTER | |||||
FURNAS | G.E. | (NOTE 3) | ||||||
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| SIZE | |||||
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| (NOTE 1) | (NOTE 2) | SET | MAX. | ||
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| 380 | 3 | K78 | L866B | 68 | 73 | |
40 | 30 | 460 | 3 | K77 | L710B | 56 | 60 | |
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| 575 | 3 | K73 | L520B | 45 | 48 | |
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| 380 | 3 | K86 | L107C | 81 | 87 | |
50 | 37 | 460 | 3 | K78 | L866B | 68 | 73 | |
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| 575 | 3 | K77 | L710B | 56 | 60 | |
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| 380 | 4(1) | K89 | L126C | 101 | 108 | |
60 | 45 | 460 | 4(1) | K86 | L107C | 83 | 89 | |
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| 575 | 4(1) | K78 | L787B | 64 | 69 | |
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| 380 | 4 | K92 | L142C | 121 | 130 | |
75 | 55 | 460 | 4(1) | K89 | L126C | 100 | 107 | |
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| 575 | 4(1) | K85 | L950C | 79 | 85 | |
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| 380 | 5(1) | K28 | L100B | 168 | 181 | |
100 | 75 | 460 | 4 | K92 | L155C | 134 | 144 | |
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| 575 | 4 | K90 | L142C | 108 | 116 | |
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| 380 | 5 | K32 | L135B | 207 | 223 | |
125 | 90 | 460 | 5(1) | K29 | L111B | 176 | 189 | |
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| 575 | 5(1) | K26 | L825A | 140 | 150 | |
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| 380 | 5 | - | L147B | 248 | 267 | |
150 | 110 | 460 | 5(1) | K32 | L122B | 206 | 221 | |
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| 575 | 5(1) | K28 | L100B | 165 | 177 | |
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| 380 | 6 | K26 | - | 270 | 290 | |
175 | 130 | 460 | 5 | K33 | L147B | 233 | 250 | |
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| 575 | 5 | K31 | L111B | 186 | 200 | |
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| 380 | 6 | K27 | - | 316 | 340 | |
200 | 150 | 460 | 5 | K33 | L165B | 266 | 286 | |
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| 575 | 5 | K32 | L135B | 213 | 229 | |
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Toshiba Type: 2E RC820, set at 8 sec max.
WEG: RW2
Westinghouse Types: FT13, FT23, FT33, FT43, K7D, K27D, K67D, Advantage (Class 10), MOR, IQ500 (Class 5)
Westmaster: OLWROO and OLWTOO suffi x D thru P
Other relay types from these and other manufacturers may or may not provide acceptable protection, and they should not be used without approval of Franklin Electric.
Some approved types may only be available for part of the listed motor ratings. When relays are used with current transformers, relay setting is the specifi ed amps divided by the transformer ratio.
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