Recommended Adjustable Overload Relays

Application – Three-Phase Motors

Recommended Adjustable Overload Relays

Advance Controls: MDR3 Overload

AEG Series: B17S, B27S, B27-2

ABB Type: RVH 40, RVH65, RVP160,

T25DU, T25CT, TA25DU

AGUT: MT03, R1K1, R1L0, R1L3, TE set Class 5

Allen Bradley: Bulletin 193, SMP-Class 10 only

Automatic Switch Types: DQ, LR1-D,LR1-F,

LR2 Class 10

Benshaw: RSD6 (Class 10) Soft Start

Bharita C-H: MC 305 ANA 3

Clipsal: 6CTR, 6MTR

Cutler-Hammer:C316F, C316P, C316S, C310-set at 6 sec max, Advantage Class10

Fanal Types: K7 or K7D through K400

Franklin Electric: Subtrol-Plus, SubMonitor

Fuji Types: TR-OQ, TR-OQH, TR-2NQ, TR- 3NQ, TR-4NQ, TR-6NQ, RCa 3737-ICQ & ICQH

Furnas Types: US15 48AG & 48BG, 958L, ESP100-Class 10 only, 3RB10-Class 10

General Electric: CR4G, CR7G, RT*1, RT*2,

RTF3, RT*4, CR324X-Class 10 only

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: FKT-15N, 15GN, 15E, 15GE, FT-15N, FHT-15N

Mitsubishi: ET, TH-K12ABKP, TH-K20KF, TH-K20KP, TH-K20TAKF, TH-K60KF, TH-K60TAKF

Omron: K2CM Set Operating Timing Code = 10 & time setting 6 sec max, SE-KP24E time setting 6 sec max

Riken: PM1, PM3

Samwha: EOCRS Set for Class 5, EOCR-ST, EOCR-SE, EOCR-AT time setting 6 sec max

Siemens Types: 3UA50, -52, -54, -55, -58, -59, -60, -61, -62, -66, -68, -70, 3VUI3, 3VE, 3UB (Class 5)

Sprecher and Schuh Types: CT, CT1, CTA 1, CT3K, CT3-12 thru CT3-42, KTA3,

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), LR1-D,LR1-F, LR2 Class 10, Types 18A, 32A, SS-Class 10, SR-Class 10 and

63-A-LB Series. Integral 18,32,63, GV2-L, GV2-M, GV2-P, GV3-M (1.6-10 amp only) LR9D, SF Class 10, ST Class 10, LT6 (Class 5 or 10), LRD (Class 10), Motor Logic (Class10)

Table 30 - 60 Hz 8" Motors

			NEMA	HEATERS FOR		ADJUSTABLE
			NEMA	OVERLOAD RELAYS		RELAYS
HP	KW	VOLTS	STARTER	OVERLOAD RELAYS		RELAYS
HP	KW	VOLTS	STARTER	FURNAS	G.E.	(NOTE 3)
			SIZE			(NOTE 3)

				(NOTE 1)	(NOTE 2)	SET	MAX.
				(NOTE 1)	(NOTE 2)	SET	MAX.
		380	3	K78	L866B	68	73
40	30	460	3	K77	L710B	56	60
		575	3	K73	L520B	45	48
		380	3	K86	L107C	81	87
50	37	460	3	K78	L866B	68	73
		575	3	K77	L710B	56	60
		380	4(1)	K89	L126C	101	108
60	45	460	4(1)	K86	L107C	83	89
		575	4(1)	K78	L787B	64	69
		380	4	K92	L142C	121	130
75	55	460	4(1)	K89	L126C	100	107
		575	4(1)	K85	L950C	79	85
		380	5(1)	K28	L100B	168	181
100	75	460	4	K92	L155C	134	144
		575	4	K90	L142C	108	116

		380	5	K32	L135B	207	223
125	90	460	5(1)	K29	L111B	176	189
		575	5(1)	K26	L825A	140	150

		380	5	-	L147B	248	267
150	110	460	5(1)	K32	L122B	206	221
		575	5(1)	K28	L100B	165	177

		380	6	K26	-	270	290
175	130	460	5	K33	L147B	233	250
		575	5	K31	L111B	186	200

		380	6	K27	-	316	340
200	150	460	5	K33	L165B	266	286
		575	5	K32	L135B	213	229

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.

Application – Three-Phase Motors