Have a Rockwell 1321, MTE RL, TCI KDR or KLR, Acme or Hammond Power Solutions line reactor number? Find the Block LR3 reactor for the same horsepower and impedance below. Both tables are 480 V, three phase, from 0.5 HP to 500 HP. Send the part number you have and we send back the Block match and a quote.
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480 V, 3 percent impedance
| NEC HP | kW | Block | Rockwell 1321 | MTE RL | TCI KDR | TCI KLR | Acme | Hammond Power Solutions |
|---|---|---|---|---|---|---|---|---|
| 0.5 HP | 0.38 kW | LR3 48-3/2 | 1321-3R2-D | RL-00104 | KDRULA6L | n/a | n/a | CRX01D1AC |
| 0.75 HP | 0.56 kW | LR3 48-3/2 | 1321-3R2-D | RL-00201 | KDRULA7L | n/a | n/a | CRX01D6AC |
| 1 HP | 0.75 kW | LR3 48-3/2 | 1321-3R2-D | RL-00201 | KDRULA8L | KLRUL2ATB | ALRB-002TBC | CRX02D1AC |
| 1.5 HP | 1.1 kW | LR3 48-3/4 | 1321-3R4-A | RL-00402 | KDRULA9L | KLRUL3ATB | ALRB-003TBC | CRX0003AC |
| 2 HP | 1.5 kW | LR3 48-3/4 | 1321-3R4-A | RL-00402 | KDRULA1L | KLRUL4ATB | ALRB-004TBC | CRX03D4AC |
| 3 HP | 2.3 kW | LR3 48-3/8 | 1321-3R8-A | RL-00803 | KDRULA2L | KLRUL6ATB | ALRB-006TBC | CRX04D8AC |
| 5 HP | 3.8 kW | LR3 48-3/8 | 1321-3R8-A | RL-00802 | KDRULA3L | KLRUL8ATB | ALRB-008TBC | CRX07D6AC |
| 7.5 HP | 5.6 kW | LR3 48-3/16 | 1321-3R18-A | RL-01202 | KDRULA4L | KLRUL12ATB | ALRB-012TBC | CRX0011BC |
| 10 HP | 7.5 kW | LR3 48-3/20 | 1321-3R18-A | RL-01802 | KDRULA5L | KLRUL16ATB | ALRB-016TBC | CRX0014AC |
| 15 HP | 11 kW | LR3 48-3/25 | 1321-3R25-A | RL-02502 | KDRULB2L | KLRUL21ATB | ALRB-025TBC | CRX0021AC |
| 20 HP | 15 kW | LR3 48-3/35 | 1321-3R35-A | RL-03502 | KDRULB1L | KLRUL27ATB | ALRB-027TBC | CRX0027BC |
| 25 HP | 19 kW | LR3 48-3/35 | 1321-3R35-A | RL-03502 | KDRULD1L | KLRUL35ATB | ALRB-035TBC | CRX0034AC |
| 30 HP | 23 kW | LR3 48-3/45 | 1321-3R45-A | RL-04502 | KDRULD2L | KLRUL45ATB | ALRB-045TBC | CRX0040AC |
| 40 HP | 30 kW | LR3 48-3/63 | 1321-3R55-A | RL-05502 | KDRULC1L | KLRUL55ATB | ALRB-055TBC | CRX0052BC |
| 50 HP | 38 kW | LR3 48-3/80 | 1321-3R80-A | RL-08002 | KDRULF2L | KLRUL80ATB | ALRB-080TBC | CRX0065AC |
| 60 HP | 45 kW | LR3 48-3/80 | 1321-3R80-A | RL-08002 | KDRULF4L | KLRUL80ATB | ALRB-080TBC | CRX0077AC |
| 75 HP | 56 kW | LR3 48-3/100 | 1321-3R100-B | RL-10002 | KDRULF3L | KLRUL110APT | ALRB-110CBC | CRX0096AC |
| 100 HP | 75 kW | LR3 48-3/125 | 1321-3R130-B | RL-13002 | KDRULH3L | KLRUL130APT | ALRB-130CBC | CRX0124AC |
| 125 HP | 94 kW | LR3 48-3/160 | 1321-3R160-B | RL-16002 | KDRULH2L | KLRUL160APT | ALRB-160CBC | CRX0156AC |
| 150 HP | 113 kW | LR3 48-3/200 | 1321-3R200-B | RL-20002B14 | KDRULH1L | KLRUL200APT | ALRB-200CBC | CRX0180AC |
| 200 HP | 150 kW | LR3 48-3/250 | 1321-3RB250-B | RL-25002B14 | KDRULG3L | KLRUL250APT | ALRB-250CBC | CRX0240AC |
| 300 HP | 225 kW | LR3 48-3/400 | 1321-3RB400-B | RL-40002B14 | KDRULG2L | KLRUL360APT | ALRB-360CBC | CRX0361AC |
| 350 HP | 263 kW | LR3 48-3/500 | 1321-3R500-B | RL-50002 | KDRULJ2L | KLRUL420APT | ALRB-420CBC | CRX0414AC |
| 400 HP | 300 kW | LR3 48-3/500 | 1321-3R500-B | RL-50002 | LDRULJ1L | KLRUL480APT | ALRB-480CBC | CRX0477AC |
| 500 HP | 375 kW | LR3 48-3/630 | 1321-3R600-B | RL-60002 | KDRULL2L | KLRUL750APT | ALRB-600CBC | CRX0590AC |
480 V, 5 percent impedance
| NEC HP | kW | Block | Rockwell 1321 | MTE RL | TCI KDR | TCI KLR | Acme | Hammond Power Solutions |
|---|---|---|---|---|---|---|---|---|
| 0.5 HP | 0.38 kW | LR3 48-5/2 | 1321-3R2-B | RL-00103 | KDRULA6H | n/a | n/a | CRX01D1BC |
| 0.75 HP | 0.56 kW | LR3 48-5/2 | 1321-3R2-B | RL-00202 | KDRULA7H | n/a | n/a | CRX01D6BC |
| 1 HP | 0.75 kW | LR3 48-5/2 | 1321-3R2-B | RL-00202 | KDRULA8H | KLRUL2CTB | ALRC-002TBC | CRX02D1BC |
| 1.5 HP | 1.1 kW | LR3 48-5/4 | 1321-3R4-C | RL-00404 | KDRULA9H | KLRUL3CTB | ALRC-003TBC | CRX0003BC |
| 2 HP | 1.5 kW | LR3 48-5/4 | 1321-3R4-C | RL-00404 | KDRULA1H | KLRUL4CTB | ALRC-004TBC | CRX03D4BC |
| 3 HP | 2.3 kW | LR3 48-5/8 | 1321-3R8-C | RL-00804 | KDRULA2H | KLRUL6CTB | ALRC-006TBC | CRX04D8BC |
| 5 HP | 3.8 kW | LR3 48-5/8 | 1321-3R8-C | RL-00803 | KDRULA3H | KLRUL8CTB | ALRC-008TBC | CRX07D6BC |
| 7.5 HP | 5.6 kW | LR3 48-5/16 | 1321-3R18-C | RL-01203 | KDRULA4H | KLRUL12CTB | ALRC-012TBC | CRX0011CC |
| 10 HP | 7.5 kW | LR3 48-5/20 | 1321-3R18-C | RL-01803 | KDRULA5H | KLRUL16CTB | ALRC-016TBC | CRX0014BC |
| 15 HP | 11 kW | LR3 48-5/25 | 1321-3R18-C | RL-02503 | KDRULB2H | KLRUL21CTB | ALRC-025TBC | CRX0021BC |
| 20 HP | 15 kW | LR3 48-5/35 | 1321-3R35-C | RL-03503 | KDRULC3H | KLRUL27CTB | ALRC-027TBC | CRX0027CC |
| 25 HP | 19 kW | LR3 48-5/35 | 1321-3R35-C | RL-03503 | KDRULC1H | KLRUL35CTB | ALRC-035TBC | CRX0034BC |
| 30 HP | 23 kW | LR3 48-5/45 | 1321-3R45-B | RL-04503 | KDRULE2H | KLRUL45CTB | ALRC-045TBC | CRX0040BC |
| 40 HP | 30 kW | LR3 48-5/63 | 1321-3R55-B | RL-05503 | KDRULF4H | KLRUL55CTB | ALRC-055TBC | CRX0052DC |
| 50 HP | 38 kW | LR3 48-5/80 | 1321-3R80-B | RL-08003 | KDRULF1H | KLRUL80CTB | ALRC-080TBC | CRX0065BC |
| 60 HP | 45 kW | LR3 48-5/80 | 1321-3R80-B | RL-08003 | KDRULF2H | KLRUL80CTB | ALRC-080TBC | CRX0077DC |
| 75 HP | 56 kW | LR3 48-5/100 | 1321-3R100-B | RL-10003 | KDRULH2H | KLRUL110CPT | ALRC-110CBC | CRX0096BC |
| 100 HP | 75 kW | LR3 48-5/125 | 1321-3R130-C | RL-13003 | KDRULI2H | KLRUL130CPT | ALRC-130CBC | CRX0124BC |
| 125 HP | 94 kW | LR3 48-5/160 | 1321-3R160-C | RL-16003 | KDRULG3H | KLRUL160CPT | ALRC-160CBC | CRX0156BC |
| 150 HP | 113 kW | LR3 48-5/200 | 1321-3R200-C | RL-20003B14 | KDRULG1H | KLRUL200CPT | ALRC-200CBC | CRX0180BC |
| 200 HP | 150 kW | LR3 48-5/250 | 1321-3RB250-C | RL-25003B14 | KDRULJ1H | KLRUL250CPT | ALRC-250CBC | CRX0240BC |
| 300 HP | 225 kW | LR3 48-5/400 | 1321-3RB400-C | RL-40003B14 | KDRULL2H | KLRUL360CPT | ALRC-360CBC | CRX0361BC |
| 350 HP | 263 kW | LR3 48-5/500 | 1321-3R500-C | RL-50003 | KDRULL3H | KLRUL420CPT | ALRC-420CBC | CRX0414BC |
| 400 HP | 300 kW | LR3 48-5/500 | 1321-3R500-C | RL-50003 | LDRULL4H | KLRUL480CPT | ALRC-480CBC | CRX0477BC |
| 500 HP | 375 kW | LR3 48-5/630 | 1321-3R600-B | RL-60003 | KDRULL6H | KLRUL750CPT | ALRC-600CBC | CRX0590BC |
From the Block line reactor cross reference table. Hammond Power Solutions is a transformer company and is not Hammond Manufacturing. Confirm ratings against the current datasheets before you release a drawing.
How to read the tables
Find the competitor part number in its column. Read across to the Block LR3 part number in the same row. The first number after LR3 48 is the impedance (3 or 5 percent). The number after the slash is the rated current in amps. Example: LR3 48-5/35 is a 5 percent, 35 A reactor for 20 to 25 HP at 480 V.
Rows are by NEC horsepower at 480 V. Two horsepower ratings can share one reactor, so a part number can show up in two rows. Block part numbers through 125 A link to the product page. For 160 A and up, send the part number and we quote it.
3 percent or 5 percent?
3 percent is the usual choice to protect a drive from line spikes and nuisance trips. 5 percent cuts more harmonic current and is common on the line side when a site has a harmonic limit. On the load side, between drive and motor, a reactor also helps with long motor leads. Tell us the drive, the motor HP and the lead length and we will size it with you.
Common questions
What Block line reactor replaces a Rockwell 1321-3R8-A?
Block LR3 48-3/8, a 3 percent, 8 A reactor for 3 to 5 HP at 480 V.
What Block line reactor replaces an MTE RL-03502?
Block LR3 48-3/35, a 3 percent, 35 A reactor for 20 to 25 HP at 480 V. For 5 percent, MTE RL-03503 crosses to Block LR3 48-5/35.
What Block line reactor replaces a TCI KDRULA3L?
Block LR3 48-3/8, a 3 percent reactor for 5 HP at 480 V. The TCI KDRULA3H (5 percent) crosses to Block LR3 48-5/8.
Do you have Block line reactors above 125 A?
Yes. The tables run to LR3 48-3/630 and LR3 48-5/630 for 500 HP. Send the part number and we quote it.
Get a quote or review the application
Send the part number you have, the quantity and the date you need it. We send back the Block match, the lead time and a quote. Sizing a new drive panel? Book a time and we will go through the reactor, the fuses and the enclosure cooling with you.
Request a QuoteBook 30 Minutes to Review the Application
More: all cross references · Block line reactors and power supplies · control transformers by kVA
Rockwell Automation and Allen-Bradley are trademarks of Rockwell Automation. MTE is a trademark of MTE Corporation. TCI is a trademark of Trans-Coil International. Acme is a trademark of Acme Electric. Hammond Power Solutions is a trademark of Hammond Power Solutions Inc. Applied Control Inc. is not affiliated with these companies.