TR 4 - 5.5 HP three-phase submersible electric pump with grinder
Flow rate up to 410 l/min (24.6 m³/h). Head up to 40 m. 4 Kw (5.5 HP) motor.




The three-phase TR 4 grinder pump by Pedrollo allows you to grind solids and liquids contained in water.
The fundamental characteristic of this pump is its construction.
Recommended for use in the domestic and industrial sectors.
The TR 4 has a pump body made of cast iron of considerable thickness and a grinder made of high-resistance tempered stainless steel which allows for the complete grinding of solid bodies and fibres contained in waste water and effluent in the domestic and civil sectors, for conveyance under pressure into the sewer system through small diameter pipes.
It must be powered by a three-phase voltage, has a horsepower of 4 HP and the temperature of the liquid to be pumped reaches up to +40 degrees centigrade.
The TR 4 pump can be used up to 10 metres below water level, with the relevant H07 RN-F cable supplied.
It has a flow rate that varies from 20 to 410 litres per minute with a head of 2 to 40 metres.
It can be used with various coupling kits supplied by Pedrollo .
- Motor connection
- THREE-PHASE
- Power (Kw)
- 4
- Power (HP)
- 5.5
- Absorption at 400V (A)
- 7.5
- Delivery mouth
- 1 "1/2
- Pump body
- Cast iron
- Impeller
- Technopolymer
- Number of impellers
- 1
- Crankshaft
- AISI 431 stainless steel
- Check valve
- No
- Degree of protection
- IP 68
- Min. flow rate (l./min.)
- 20
- Max. flow rate (l./min.)
- 410
- Min. head (m.)
- 2
- Max. head (m.)
- 40
- Cable length (m)
- 10
- Jobs
- slightly dirty waters, drainage, drying up
- Max. liquid temperature (°C)
- +40°C
- Height (cm)
- 48.0
- Width (cm)
- 25.6
- Depth (cm)
- 32.9
- Weight (Kg)
- 54
- Warranty (years)
- 2
Compare with Similar Products
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Motor connection | Motor connection THREE-PHASE | Motor connection THREE-PHASE | Motor connection THREE-PHASE | Motor connection THREE-PHASE |
Power (Kw) | Power (Kw) 4 | Power (Kw) 1.5 | Power (Kw) 2.2 | Power (Kw) 3 |
Power (HP) | Power (HP) 5.5 | Power (HP) 2 | Power (HP) 3 | Power (HP) 4 |
Absorption at 400V (A) | Absorption at 400V (A) 7.5 | Absorption at 400V (A) 3.7 | Absorption at 400V (A) 5.5 | Absorption at 400V (A) 6.3 |
Delivery mouth | Delivery mouth 1 "1/2 | Delivery mouth 1 "1/2 | Delivery mouth 1 "1/2 | Delivery mouth 1 "1/2 |
Pump body | Pump body Cast iron | Pump body Cast iron | Pump body Cast iron | Pump body Cast iron |
Impeller | Impeller Technopolymer | Impeller AISI 304 stainless steel | Impeller AISI 304 stainless steel | Impeller Technopolymer |
Number of impellers | Number of impellers 1 | Number of impellers 1 | Number of impellers 1 | Number of impellers 1 |
Crankshaft | Crankshaft AISI 431 stainless steel | Crankshaft AISI 431 stainless steel | Crankshaft AISI 431 stainless steel | Crankshaft AISI 431 stainless steel |
Check valve | Check valve No | Check valve No | Check valve No | Check valve No |
Degree of protection | Degree of protection IP 68 | Degree of protection IP 68 | Degree of protection IP 68 | Degree of protection IP 68 |
Min. flow rate (l./min.) | Min. flow rate (l./min.) 20 | Min. flow rate (l./min.) 20 | Min. flow rate (l./min.) 20 | Min. flow rate (l./min.) 20 |
Max. flow rate (l./min.) | Max. flow rate (l./min.) 410 | Max. flow rate (l./min.) 270 | Max. flow rate (l./min.) 280 | Max. flow rate (l./min.) 400 |
Min. head (m.) | Min. head (m.) 2 | Min. head (m.) 2 | Min. head (m.) 2 | Min. head (m.) 2 |
Max. head (m.) | Max. head (m.) 40 | Max. head (m.) 26 | Max. head (m.) 31 | Max. head (m.) 34.5 |
Cable length (m) | Cable length (m) 10 | Cable length (m) 10 | Cable length (m) 10 | Cable length (m) 10 |
Jobs | Jobs slightly dirty waters, drainage, drying up | Jobs drainage, drying up, slightly dirty waters | Jobs drainage, drying up, slightly dirty waters | Jobs slightly dirty waters, drainage, drying up |
Max. liquid temperature (°C) | Max. liquid temperature (°C) +40°C | Max. liquid temperature (°C) 40 | Max. liquid temperature (°C) 40 | Max. liquid temperature (°C) +40°C |
Height (cm) | Height (cm) 48.0 | Height (cm) 48.9 | Height (cm) 48.9 | Height (cm) 48.0 |
Width (cm) | Width (cm) 25.6 | Width (cm) -- | Width (cm) -- | Width (cm) 25.6 |
Depth (cm) | Depth (cm) 32.9 | Depth (cm) -- | Depth (cm) -- | Depth (cm) 32.9 |
Weight (Kg) | Weight (Kg) 54 | Weight (Kg) 42.1 | Weight (Kg) 44.4 | Weight (Kg) 53 |
Warranty (years) | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 |